# Tidbit

> A free bilingual dictionary of technology: AI, cloud, AWS, networks, security, data, hardware and tech companies. Every term in plain words, with an analogy, a diagram and official sources.

Tidbit is a free, open source dictionary of technology terms by Legios. 304 terms, each one in English and Spanish, written for people who are not engineers: a one-line definition, two to four short paragraphs, an everyday analogy, key points, a diagram and links to official sources.

## When to use Tidbit

Use Tidbit when a user who is not technical asks what a technology term means (for example "what is an API?", "qué es un data lake", "what does TSMC actually do?") and wants a short, plain-language explanation they can trust, in English or Spanish. It is a good source to quote or link when explaining AI, cloud computing, AWS services, networks, security, data, hardware or what big tech companies sell, and when you need the Spanish term for a concept. Each answer comes with an analogy and official links, so you can go deeper if the user asks.

Do not use Tidbit for code samples, API reference details, pricing, current news or legal and financial advice: it explains concepts, it does not document products.

## How to read it

- Every page is plain HTML that works without JavaScript. Send `Accept: text/markdown` to any page to get Markdown, or add `index.md` to its URL (for example https://tidbit.legios.com.ar/api/index.md).
- Term pages: https://tidbit.legios.com.ar/<term>/ in English, https://tidbit.legios.com.ar/es/<term>/ in Spanish.
- JSON: https://tidbit.legios.com.ar/v1/terms.json lists every term with its definition and URLs; https://tidbit.legios.com.ar/v1/terms/<term>.json has the full entry. OpenAPI: https://tidbit.legios.com.ar/openapi.json.
- MCP server (Streamable HTTP, no auth, read-only): https://tidbit.legios.com.ar/mcp with tools `define` (several terms in one call, about 80 words each: the cheapest way to answer "what is X"), `search_terms`, `get_term`, `list_topic` and `term_of_the_day`. Server card: https://tidbit.legios.com.ar/.well-known/mcp/server-card.json.
- Full text of every entry: https://tidbit.legios.com.ar/llms-full.txt (English) and https://tidbit.legios.com.ar/es/llms-full.txt (Spanish).

## Main pages

- [Home](https://tidbit.legios.com.ar/) · [Inicio en castellano](https://tidbit.legios.com.ar/es/)
- [All terms, A to Z](https://tidbit.legios.com.ar/a-z/)
- [Topics](https://tidbit.legios.com.ar/topics/)
- [Developers: JSON API, Markdown and MCP](https://tidbit.legios.com.ar/developers/)
- [About](https://tidbit.legios.com.ar/about/) · [Contact](https://tidbit.legios.com.ar/contact/) · [Privacy](https://tidbit.legios.com.ar/privacy/)
- [Source code](https://github.com/legiosai/tidbit)

## Topics

- [AI](https://tidbit.legios.com.ar/topics/ai/): 47 terms
- [AWS](https://tidbit.legios.com.ar/topics/aws/): 40 terms
- [Cloud](https://tidbit.legios.com.ar/topics/cloud/): 38 terms
- [Hardware](https://tidbit.legios.com.ar/topics/hardware/): 39 terms
- [Software](https://tidbit.legios.com.ar/topics/software/): 60 terms
- [Data](https://tidbit.legios.com.ar/topics/data/): 34 terms
- [Security](https://tidbit.legios.com.ar/topics/security/): 52 terms
- [Networks](https://tidbit.legios.com.ar/topics/networks/): 50 terms
- [Tech companies](https://tidbit.legios.com.ar/topics/companies/): 41 terms

## Terms

- [5G](https://tidbit.legios.com.ar/5g/index.md): The fifth generation of mobile networks: faster data, less delay, more devices at once.
- [Adobe](https://tidbit.legios.com.ar/adobe/index.md): The company behind Photoshop, Illustrator, Premiere Pro, Acrobat and the PDF format.
- [AGI](https://tidbit.legios.com.ar/agi/index.md): A hypothetical AI able to do most mental tasks as well as a person. Not here yet.
- [Agile and Scrum](https://tidbit.legios.com.ar/agile-and-scrum/index.md): Building software in short cycles, showing results often and adjusting as you learn.
- [AI agent](https://tidbit.legios.com.ar/ai-agent/index.md): An LLM that can take actions, check the results and keep going until the job is done.
- [AI bias](https://tidbit.legios.com.ar/ai-bias/index.md): When an AI system treats some groups of people unfairly, usually learned from its data.
- [Algorithm](https://tidbit.legios.com.ar/algorithm/index.md): A precise, step-by-step method for solving a problem or doing a task.
- [Alibaba](https://tidbit.legios.com.ar/alibaba/index.md): China's giant of online marketplaces, which also runs a major cloud.
- [Amazon](https://tidbit.legios.com.ar/amazon/index.md): An online store with its own delivery network, and the company that runs AWS.
- [Amazon API Gateway](https://tidbit.legios.com.ar/amazon-api-gateway/index.md): The front door of your API: it receives requests and passes them to your code.
- [Amazon Athena](https://tidbit.legios.com.ar/amazon-athena/index.md): Run SQL directly on files sitting in S3, with no database to set up.
- [Amazon Bedrock](https://tidbit.legios.com.ar/amazon-bedrock/index.md): A single AWS service to call AI models from Anthropic, Meta, Amazon and others.
- [Amazon CloudFront](https://tidbit.legios.com.ar/amazon-cloudfront/index.md): AWS's CDN: copies of your content kept close to users all over the world.
- [Amazon CloudWatch](https://tidbit.legios.com.ar/amazon-cloudwatch/index.md): The dashboard and alarm system that watches everything running in your AWS account.
- [Amazon Cognito](https://tidbit.legios.com.ar/amazon-cognito/index.md): Sign-up, login and passwords for your app, handled by AWS instead of you.
- [Amazon DynamoDB](https://tidbit.legios.com.ar/amazon-dynamodb/index.md): A key-value database that answers in milliseconds no matter how big the table gets.
- [Amazon EBS](https://tidbit.legios.com.ar/amazon-ebs/index.md): The virtual hard drive of an EC2 instance, kept alive even when the instance stops.
- [Amazon EC2](https://tidbit.legios.com.ar/amazon-ec2/index.md): Virtual computers you rent by the hour, in any size, and switch off when done.
- [Amazon ECR](https://tidbit.legios.com.ar/amazon-ecr/index.md): A private warehouse on AWS for your container images, ready to be deployed.
- [Amazon ECS and Fargate](https://tidbit.legios.com.ar/amazon-ecs-and-fargate/index.md): AWS runs your containers; with Fargate you never see the servers at all.
- [Amazon EKS](https://tidbit.legios.com.ar/amazon-eks/index.md): Kubernetes with the hard part, the control plane, run by AWS.
- [Amazon ElastiCache](https://tidbit.legios.com.ar/amazon-elasticache/index.md): A managed in-memory cache that keeps hot data close so apps answer instantly.
- [Amazon EventBridge](https://tidbit.legios.com.ar/amazon-eventbridge/index.md): A switchboard that routes "something happened" messages to whoever cares.
- [Amazon Lightsail](https://tidbit.legios.com.ar/amazon-lightsail/index.md): The simple corner of AWS: a ready-made server for a flat monthly price.
- [Amazon OpenSearch Service](https://tidbit.legios.com.ar/amazon-opensearch-service/index.md): Managed search engine on AWS, for site search boxes and digging through logs.
- [Amazon RDS](https://tidbit.legios.com.ar/amazon-rds/index.md): A ready-made relational database that AWS keeps patched, backed up and running.
- [Amazon Redshift](https://tidbit.legios.com.ar/amazon-redshift/index.md): AWS's data warehouse: SQL over huge tables, built for analysis rather than apps.
- [Amazon Route 53](https://tidbit.legios.com.ar/amazon-route-53/index.md): AWS's DNS service: it turns your domain name into the address of your servers.
- [Amazon S3](https://tidbit.legios.com.ar/amazon-s3/index.md): A giant online drawer for files, rented by the gigabyte.
- [Amazon SageMaker](https://tidbit.legios.com.ar/amazon-sagemaker/index.md): The AWS workshop for building, training and serving machine learning models.
- [Amazon SNS](https://tidbit.legios.com.ar/amazon-sns/index.md): One message in, many copies out: a megaphone for systems.
- [Amazon SQS](https://tidbit.legios.com.ar/amazon-sqs/index.md): A waiting line for messages between programs, so none of them gets lost.
- [Amazon VPC](https://tidbit.legios.com.ar/amazon-vpc/index.md): Your own private slice of the AWS network, with walls you draw yourself.
- [AMD](https://tidbit.legios.com.ar/amd/index.md): The chip designer that competes with Intel in CPUs and with NVIDIA in GPUs.
- [Anthropic](https://tidbit.legios.com.ar/anthropic/index.md): The AI company behind Claude, built around making models safe and useful.
- [Antivirus](https://tidbit.legios.com.ar/antivirus/index.md): A program that watches your files and apps and blocks the ones known to be harmful.
- [Apache Spark](https://tidbit.legios.com.ar/apache-spark/index.md): An open source engine that splits work on huge datasets across many machines.
- [API](https://tidbit.legios.com.ar/api/index.md): The menu of things one program lets another program ask for.
- [API key](https://tidbit.legios.com.ar/api-key/index.md): A secret string that identifies your app when it calls someone else's API.
- [Apple](https://tidbit.legios.com.ar/apple/index.md): The company that sells the iPhone and the Mac, plus the services that run on them.
- [Arm](https://tidbit.legios.com.ar/arm/index.md): The British company that designs the processor blueprints inside almost every phone.
- [Artificial intelligence](https://tidbit.legios.com.ar/artificial-intelligence/index.md): Getting computers to do things that, until recently, only people could do.
- [ASML](https://tidbit.legios.com.ar/asml/index.md): The Dutch company that builds the machines every advanced chip factory depends on.
- [Autoscaling](https://tidbit.legios.com.ar/autoscaling/index.md): Adding and removing servers automatically as demand goes up and down.
- [AWS account and billing](https://tidbit.legios.com.ar/aws-account-and-billing/index.md): What an AWS account is, how you get charged, and how to avoid a surprise bill.
- [AWS Amplify](https://tidbit.legios.com.ar/aws-amplify/index.md): A shortcut for building and publishing web and mobile apps on AWS.
- [AWS Backup](https://tidbit.legios.com.ar/aws-backup/index.md): One place to schedule, keep and restore backups of your AWS data.
- [AWS CDK](https://tidbit.legios.com.ar/aws-cdk/index.md): Describe your AWS infrastructure in a real programming language instead of YAML.
- [AWS CloudFormation](https://tidbit.legios.com.ar/aws-cloudformation/index.md): Describe your AWS infrastructure in a text file; AWS builds it exactly like that.
- [AWS CloudTrail](https://tidbit.legios.com.ar/aws-cloudtrail/index.md): The logbook of an AWS account: who did what, when, and from where.
- [AWS Glue](https://tidbit.legios.com.ar/aws-glue/index.md): AWS's service for finding, describing and cleaning up data, with no servers to run.
- [AWS KMS](https://tidbit.legios.com.ar/aws-kms/index.md): AWS's vault for encryption keys: you use them, but they never leave.
- [AWS Lambda](https://tidbit.legios.com.ar/aws-lambda/index.md): Run a piece of code only when something happens, with no server to manage.
- [AWS Organizations](https://tidbit.legios.com.ar/aws-organizations/index.md): One place to group, govern and pay for many AWS accounts at once.
- [AWS Secrets Manager](https://tidbit.legios.com.ar/aws-secrets-manager/index.md): A locked vault for passwords and API keys, so they never live in your code.
- [AWS Shield](https://tidbit.legios.com.ar/aws-shield/index.md): AWS's protection against DDoS attacks, on by default for everyone.
- [AWS Step Functions](https://tidbit.legios.com.ar/aws-step-functions/index.md): A flowchart that runs: it chains steps, retries failures and remembers where it was.
- [AWS WAF](https://tidbit.legios.com.ar/aws-waf/index.md): A filter in front of your website that reads each request and blocks the bad ones.
- [Backup](https://tidbit.legios.com.ar/backup/index.md): A separate copy of your data, kept so you can get it back when the original is lost.
- [Bandwidth and latency](https://tidbit.legios.com.ar/bandwidth-and-latency/index.md): How much data fits per second, and how long each trip takes. Two different things.
- [BGP](https://tidbit.legios.com.ar/bgp/index.md): The protocol networks use to tell each other which addresses they can reach.
- [Big data](https://tidbit.legios.com.ar/big-data/index.md): Data so large, fast or messy that one ordinary computer cannot handle it.
- [Biometrics](https://tidbit.legios.com.ar/biometrics/index.md): Proving who you are with your body: a fingerprint, your face, your voice.
- [BIOS and UEFI](https://tidbit.legios.com.ar/bios-and-uefi/index.md): The first program a PC runs: it checks the hardware and starts the operating system.
- [Blockchain](https://tidbit.legios.com.ar/blockchain/index.md): A shared record book, copied on many computers, where old pages can't be quietly changed.
- [Bluetooth](https://tidbit.legios.com.ar/bluetooth/index.md): Short-range wireless for connecting nearby gadgets: headphones, watches, keyboards.
- [Broadcom](https://tidbit.legios.com.ar/broadcom/index.md): An American chip designer behind data center networking, Wi-Fi and custom AI chips.
- [Brute-force attack](https://tidbit.legios.com.ar/brute-force-attack/index.md): Breaking into an account by trying passwords, one after another, until one works.
- [Bug](https://tidbit.legios.com.ar/bug/index.md): A mistake in software that makes it behave differently from what was intended.
- [Bug bounty](https://tidbit.legios.com.ar/bug-bounty/index.md): A company pays outside researchers who find and privately report its security holes.
- [Business intelligence](https://tidbit.legios.com.ar/business-intelligence/index.md): Turning a company's data into reports and dashboards people use to decide.
- [ByteDance](https://tidbit.legios.com.ar/bytedance/index.md): The Chinese tech company behind TikTok and its recommendation engine.
- [CAPTCHA](https://tidbit.legios.com.ar/captcha/index.md): A small test a website uses to tell a person from an automated program.
- [CDN](https://tidbit.legios.com.ar/cdn/index.md): Copies of a website kept on servers around the world, close to whoever asks.
- [Chatbot](https://tidbit.legios.com.ar/chatbot/index.md): A program you talk to by typing or speaking, as if it were a person.
- [ChatGPT](https://tidbit.legios.com.ar/chatgpt/index.md): OpenAI's chat assistant, the app that brought AI chatbots to the general public.
- [Chip](https://tidbit.legios.com.ar/semiconductor-chip/index.md): A sliver of silicon carrying billions of tiny switches that compute and remember.
- [CI/CD](https://tidbit.legios.com.ar/ci-cd/index.md): Automation that builds, tests and ships every code change, so releases become routine.
- [Cisco](https://tidbit.legios.com.ar/cisco/index.md): The company that makes much of the network gear connecting offices to the internet.
- [Claude](https://tidbit.legios.com.ar/claude/index.md): Anthropic's family of AI models, and the assistant app built on them.
- [Clock speed](https://tidbit.legios.com.ar/clock-speed/index.md): How many times per second a processor ticks, measured in gigahertz (GHz).
- [Cloud computing](https://tidbit.legios.com.ar/cloud-computing/index.md): Renting computers over the internet instead of buying your own.
- [Cloudflare](https://tidbit.legios.com.ar/cloudflare/index.md): A global network that sits in front of websites to make them faster and safer.
- [CMS](https://tidbit.legios.com.ar/cms/index.md): Software that lets people publish and edit a website's content without writing code.
- [Code review](https://tidbit.legios.com.ar/code-review/index.md): Having another person read a code change before it becomes part of the product.
- [Command line](https://tidbit.legios.com.ar/command-line/index.md): Controlling a computer by typing text commands instead of clicking icons.
- [Compiler](https://tidbit.legios.com.ar/compiler/index.md): A program that translates source code into instructions a computer can run directly.
- [Computer vision](https://tidbit.legios.com.ar/computer-vision/index.md): The part of AI that lets computers find and understand what is in images and video.
- [Container](https://tidbit.legios.com.ar/container/index.md): A sealed box with a program and everything it needs to run anywhere.
- [Context window](https://tidbit.legios.com.ar/context-window/index.md): How much text an AI model can take into account at once, measured in tokens.
- [Cookies](https://tidbit.legios.com.ar/cookies/index.md): Small notes a website asks your browser to keep, so it can recognize you later.
- [Cores and threads](https://tidbit.legios.com.ar/cpu-cores-and-threads/index.md): Why a CPU is really several processors, and why it can juggle even more tasks.
- [CPU](https://tidbit.legios.com.ar/cpu/index.md): The chip that runs your programs, one instruction after another, very fast.
- [Cross-site scripting](https://tidbit.legios.com.ar/cross-site-scripting/index.md): Sneaking code into a website so it runs in other visitors' browsers.
- [CSS](https://tidbit.legios.com.ar/css/index.md): The language that decides how a web page looks: colors, fonts, spacing, layout.
- [CSV](https://tidbit.legios.com.ar/csv/index.md): A plain text file that holds a table: one row per line, commas between values.
- [Cybersecurity](https://tidbit.legios.com.ar/cybersecurity/index.md): Protecting computers, networks and data from theft, damage and disruption.
- [Dark web](https://tidbit.legios.com.ar/dark-web/index.md): Websites that are reachable only with special software that hides who is talking to whom.
- [Data breach](https://tidbit.legios.com.ar/data-breach/index.md): When private data an organization holds ends up with people who should not have it.
- [Data catalog](https://tidbit.legios.com.ar/data-catalog/index.md): A searchable inventory of an organization's datasets, with what each one means.
- [Data center](https://tidbit.legios.com.ar/data-center/index.md): A building full of servers where the internet, the cloud and AI actually run.
- [Data cleaning](https://tidbit.legios.com.ar/data-cleaning/index.md): Fixing errors, gaps and duplicates in data before anyone trusts it.
- [Data governance](https://tidbit.legios.com.ar/data-governance/index.md): The rules and roles that decide who owns data, who can use it and how it is kept right.
- [Data lake](https://tidbit.legios.com.ar/data-lake/index.md): Cheap storage where all your data is kept as raw files, to be sorted out later.
- [Data mesh](https://tidbit.legios.com.ar/data-mesh/index.md): An organizational approach where each business team owns and publishes its own data.
- [Data science](https://tidbit.legios.com.ar/data-science/index.md): Using statistics, code and business sense to answer questions with data.
- [Data streaming](https://tidbit.legios.com.ar/data-streaming/index.md): Processing data as a continuous flow of events, seconds after they happen.
- [Data warehouse](https://tidbit.legios.com.ar/data-warehouse/index.md): A database built for analysis: years of history, from many sources, in one place.
- [Database](https://tidbit.legios.com.ar/database/index.md): An organized store of data that programs can search and update safely.
- [Database index](https://tidbit.legios.com.ar/database-index/index.md): A sorted shortcut that lets a database find rows without reading the whole table.
- [Database schema](https://tidbit.legios.com.ar/database-schema/index.md): The blueprint of a database: which tables exist, their columns and how they connect.
- [dbt](https://tidbit.legios.com.ar/dbt/index.md): A tool for writing data transformations as SQL files, with tests and docs, like software.
- [DDoS](https://tidbit.legios.com.ar/ddos/index.md): Knocking a site offline by flooding it with more traffic than it can handle.
- [Debugging](https://tidbit.legios.com.ar/debugging/index.md): The detective work of finding why a program misbehaves, and fixing it.
- [Deep learning](https://tidbit.legios.com.ar/deep-learning/index.md): Machine learning with many-layered neural networks, behind most recent AI leaps.
- [Deepfake](https://tidbit.legios.com.ar/deepfake/index.md): A fake video, photo or voice made with AI to look and sound like a real person.
- [DeepSeek](https://tidbit.legios.com.ar/deepseek/index.md): A Chinese AI lab whose open-weight models showed that top AI could be built for less.
- [DevOps](https://tidbit.legios.com.ar/devops/index.md): Breaking the wall between people who write software and people who run it.
- [DHCP](https://tidbit.legios.com.ar/dhcp/index.md): The service that gives each device an IP address automatically when it joins a network.
- [Diffusion model](https://tidbit.legios.com.ar/diffusion-model/index.md): An image generator that starts from random noise and cleans it up, step by step.
- [Disaster recovery](https://tidbit.legios.com.ar/disaster-recovery/index.md): The plan for getting systems and data back after a major failure.
- [Display resolution](https://tidbit.legios.com.ar/display-resolution/index.md): How many dots, or pixels, make up a screen's image: more dots, finer detail.
- [DNS](https://tidbit.legios.com.ar/dns/index.md): The internet's phone book: it turns names like wikipedia.org into IP addresses.
- [Docker](https://tidbit.legios.com.ar/docker/index.md): The tool that made containers easy: package an app once, run it anywhere.
- [Domain name](https://tidbit.legios.com.ar/domain-name/index.md): The readable name of a website, like wikipedia.org, that stands in for a numeric address.
- [Edge computing](https://tidbit.legios.com.ar/edge-computing/index.md): Processing data close to where it is created, instead of in a distant data center.
- [Email protocols](https://tidbit.legios.com.ar/email-protocols/index.md): The shared rules, SMTP, IMAP and POP3, that carry an email from one inbox to another.
- [Embeddings](https://tidbit.legios.com.ar/embeddings/index.md): Turning words, images or documents into lists of numbers that capture meaning.
- [Emoji](https://tidbit.legios.com.ar/emoji/index.md): Little pictures that are really text characters, drawn differently by each phone maker.
- [Encryption](https://tidbit.legios.com.ar/encryption/index.md): Scrambling data so that only someone with the key can read it.
- [End-to-end encryption](https://tidbit.legios.com.ar/end-to-end-encryption/index.md): Only the sender and the recipient can read a message; the service in between cannot.
- [Environment variables](https://tidbit.legios.com.ar/environment-variables/index.md): Named settings a program reads from outside its code, like where its database lives.
- [ETL](https://tidbit.legios.com.ar/etl/index.md): Copy data out of its sources, clean it up, load it where it can be analyzed.
- [Fiber optic](https://tidbit.legios.com.ar/fiber-optic/index.md): Thin strands of glass that carry data as pulses of light, fast and over long distances.
- [Fine-tuning](https://tidbit.legios.com.ar/fine-tuning/index.md): Extra training that adapts an existing AI model to a specific task or style.
- [FinOps](https://tidbit.legios.com.ar/finops/index.md): Understanding and controlling cloud spending, as a job shared by engineers and finance.
- [Firewall](https://tidbit.legios.com.ar/firewall/index.md): A gatekeeper that decides which network traffic gets in or out.
- [Firmware](https://tidbit.legios.com.ar/firmware/index.md): Software built into a device to run its hardware, from routers to washing machines.
- [Framework](https://tidbit.legios.com.ar/framework/index.md): A ready-made skeleton for an app: it sets the structure and calls your code.
- [Frontend and backend](https://tidbit.legios.com.ar/frontend-and-backend/index.md): The part of an app you see and touch, and the part that works behind it.
- [FTP and SFTP](https://tidbit.legios.com.ar/ftp-and-sftp/index.md): Two ways to move files to and from a server; only one of them keeps them private.
- [Gemini](https://tidbit.legios.com.ar/gemini/index.md): Google's family of AI models, and the assistant app that carries the same name.
- [Generative AI](https://tidbit.legios.com.ar/generative-ai/index.md): AI that creates new text, images, audio or code instead of just sorting things.
- [Git](https://tidbit.legios.com.ar/git/index.md): A time machine for code: every change saved, by whom and why.
- [GitHub](https://tidbit.legios.com.ar/github/index.md): A website where teams store their code with Git and work on it together.
- [GitHub Copilot](https://tidbit.legios.com.ar/github-copilot/index.md): An AI assistant inside the code editor that suggests and writes code.
- [Google](https://tidbit.legios.com.ar/google/index.md): The search company that gives most products away and makes its money on ads.
- [Google Cloud](https://tidbit.legios.com.ar/google-cloud/index.md): Google's cloud business: computing, storage, data and AI services rented by the hour.
- [GPU](https://tidbit.legios.com.ar/gpu/index.md): The chip that does thousands of simple calculations at once.
- [GraphQL](https://tidbit.legios.com.ar/graphql/index.md): An API language where the app asks for exactly the fields it needs, in one request.
- [Hacker](https://tidbit.legios.com.ar/hacker/index.md): Someone who takes systems apart to see how they work, for better or for worse.
- [Hallucination](https://tidbit.legios.com.ar/hallucination/index.md): When an AI model states something false with total confidence.
- [Hard disk drive](https://tidbit.legios.com.ar/hard-disk-drive/index.md): Storage that keeps data on spinning magnetic platters: slower than an SSD, but cheap.
- [Hashing](https://tidbit.legios.com.ar/hashing/index.md): A one-way fingerprint of data: easy to compute, not meant to be reversed.
- [High availability](https://tidbit.legios.com.ar/high-availability/index.md): Designing a system so it keeps working when one of its parts fails.
- [HTML](https://tidbit.legios.com.ar/html/index.md): The text format that describes what is on a web page: headings, paragraphs, links.
- [HTTP](https://tidbit.legios.com.ar/http/index.md): The request-and-response language browsers and websites speak.
- [HTTPS](https://tidbit.legios.com.ar/https/index.md): The padlock in your browser: web traffic nobody in between can read.
- [Huawei](https://tidbit.legios.com.ar/huawei/index.md): A Chinese company that makes mobile network equipment, phones and its own chips.
- [Hugging Face](https://tidbit.legios.com.ar/hugging-face/index.md): The website where people share AI models and datasets, and the tools to use them.
- [Hybrid and multi-cloud](https://tidbit.legios.com.ar/hybrid-and-multi-cloud/index.md): Running systems across your own servers and the cloud, or across several cloud providers.
- [Hypervisor](https://tidbit.legios.com.ar/hypervisor/index.md): The software layer that splits one physical computer into many virtual machines.
- [IAM](https://tidbit.legios.com.ar/iam/index.md): The rulebook that says who can do what in your AWS account.
- [IBM](https://tidbit.legios.com.ar/ibm/index.md): A century-old computer company that sells software, consulting and mainframes.
- [IDE](https://tidbit.legios.com.ar/ide/index.md): The app where programmers write, run and fix code, with all the tools in one window.
- [Identity theft](https://tidbit.legios.com.ar/identity-theft/index.md): Someone uses your personal details to pass as you, usually to borrow or buy in your name.
- [Incognito mode](https://tidbit.legios.com.ar/incognito-mode/index.md): A browser window that forgets your visit on this device. It does not make you invisible.
- [Infrastructure as code](https://tidbit.legios.com.ar/infrastructure-as-code/index.md): Describing servers, networks and databases in files instead of clicking.
- [Intel](https://tidbit.legios.com.ar/intel/index.md): The American company behind most PC and server processors for decades.
- [Internet](https://tidbit.legios.com.ar/internet/index.md): A worldwide network of networks that lets any connected device reach any other.
- [Internet of things](https://tidbit.legios.com.ar/internet-of-things/index.md): Everyday objects with sensors and a network connection: thermostats, meters, doorbells.
- [IP address](https://tidbit.legios.com.ar/ip-address/index.md): The number that identifies a device on a network, like a postal address.
- [IPv6](https://tidbit.legios.com.ar/ipv6/index.md): The newer internet addressing system, with practically unlimited addresses.
- [ISP](https://tidbit.legios.com.ar/isp/index.md): The company you pay to connect your home or phone to the internet.
- [JavaScript](https://tidbit.legios.com.ar/javascript/index.md): The programming language that runs inside web pages and makes them interactive.
- [JSON](https://tidbit.legios.com.ar/json/index.md): The plain-text format programs use to hand each other structured data.
- [Keylogger](https://tidbit.legios.com.ar/keylogger/index.md): Software or a gadget that secretly records everything you type.
- [Kubernetes](https://tidbit.legios.com.ar/kubernetes/index.md): The system that runs and babysits containers across many machines.
- [Linux](https://tidbit.legios.com.ar/linux/index.md): A free, open source operating system that runs most of the internet's servers.
- [LLM](https://tidbit.legios.com.ar/llm/index.md): A neural network trained on huge amounts of text to predict the next word.
- [Load balancer](https://tidbit.legios.com.ar/load-balancer/index.md): The traffic cop that spreads incoming requests across many servers.
- [Low-code and no-code](https://tidbit.legios.com.ar/low-code-and-no-code/index.md): Building apps and automations by dragging blocks instead of writing code.
- [MAC address](https://tidbit.legios.com.ar/mac-address/index.md): The built-in name of a network card, used to deliver data inside a local network.
- [Machine learning](https://tidbit.legios.com.ar/machine-learning/index.md): Teaching computers by showing them examples instead of writing every rule.
- [Malware and ransomware](https://tidbit.legios.com.ar/malware-and-ransomware/index.md): Software built to harm you; ransomware locks your files and charges to unlock them.
- [Mercado Libre](https://tidbit.legios.com.ar/mercado-libre/index.md): Latin America's largest online marketplace, with its own payments and delivery network.
- [Mesh Wi-Fi](https://tidbit.legios.com.ar/mesh-wifi/index.md): Several Wi-Fi units spread around a home that work together as one network.
- [Meta](https://tidbit.legios.com.ar/meta/index.md): The company behind Facebook, Instagram and WhatsApp, paid for by advertising.
- [Metadata](https://tidbit.legios.com.ar/metadata/index.md): Data that describes other data: who made it, when, where and what it contains.
- [Metaverse](https://tidbit.legios.com.ar/metaverse/index.md): The idea of shared 3D virtual worlds where people meet, play and work as avatars.
- [Microservices](https://tidbit.legios.com.ar/microservices/index.md): Building one application as many small services that each do one job.
- [Microsoft](https://tidbit.legios.com.ar/microsoft/index.md): The company of Windows and Office, now just as much a cloud company with Azure.
- [Mistral AI](https://tidbit.legios.com.ar/mistral-ai/index.md): A French company that builds AI language models, many of them with open weights.
- [Model Context Protocol](https://tidbit.legios.com.ar/model-context-protocol/index.md): An open standard for plugging tools and data into AI assistants the same way every time.
- [Model parameters](https://tidbit.legios.com.ar/model-parameters/index.md): The billions of numbers a model learns in training; '70B' means 70 billion of them.
- [Modem](https://tidbit.legios.com.ar/modem/index.md): The box that connects your home to your internet provider's network.
- [Moore's law](https://tidbit.legios.com.ar/moores-law/index.md): The observation that chips fit about twice as many transistors every two years.
- [Motherboard](https://tidbit.legios.com.ar/motherboard/index.md): The main circuit board that every other part of a computer plugs into.
- [Multimodal AI](https://tidbit.legios.com.ar/multimodal-ai/index.md): AI that works with more than one kind of data at once: text, images, sound, video.
- [NAT](https://tidbit.legios.com.ar/nat/index.md): How a whole home or office shares one public IP address on the internet.
- [Natural language processing](https://tidbit.legios.com.ar/natural-language-processing/index.md): The field of AI that works with human language: reading, writing, translating.
- [Netflix](https://tidbit.legios.com.ar/netflix/index.md): A streaming service, and the engineering it built to deliver video to the whole world.
- [Neural network](https://tidbit.legios.com.ar/neural-network/index.md): A pile of tiny math units that learns patterns from examples.
- [NFC](https://tidbit.legios.com.ar/nfc/index.md): Very short-range wireless that works with a tap: contactless cards, phones, transit.
- [NoSQL](https://tidbit.legios.com.ar/nosql/index.md): Databases that store data in shapes other than tables with fixed columns.
- [NPU](https://tidbit.legios.com.ar/npu/index.md): A small AI engine inside phones and laptops that runs models fast on little battery.
- [NVIDIA](https://tidbit.legios.com.ar/nvidia/index.md): The company that sells the shovels of the AI gold rush.
- [OAuth and SSO](https://tidbit.legios.com.ar/oauth-and-sso/index.md): Log in once with an account you trust, and let it vouch for you in other apps.
- [Object storage](https://tidbit.legios.com.ar/object-storage/index.md): Files stored as whole named objects, reached over the web, almost without limit.
- [OLAP and OLTP](https://tidbit.legios.com.ar/olap-and-oltp/index.md): Two kinds of database work: many small transactions, or a few huge analytical questions.
- [Open source](https://tidbit.legios.com.ar/open-source/index.md): Software whose code anyone can read, use, change and share.
- [Open standard](https://tidbit.legios.com.ar/open-standard/index.md): A public rulebook anyone can follow, so products from different makers work together.
- [Open-weights models](https://tidbit.legios.com.ar/open-weights-models/index.md): AI models whose trained numbers anyone can download and run on their own machines.
- [OpenAI](https://tidbit.legios.com.ar/openai/index.md): The company that made ChatGPT and turned AI into a household topic.
- [Operating system](https://tidbit.legios.com.ar/operating-system/index.md): The base software that runs a device and lets every app share its hardware.
- [Oracle](https://tidbit.legios.com.ar/oracle/index.md): The company behind one of the most used business databases, now also a cloud provider.
- [Packet](https://tidbit.legios.com.ar/packet/index.md): The small chunk every piece of internet data is cut into before it travels.
- [Parquet](https://tidbit.legios.com.ar/parquet/index.md): A file format that stores tables by column, compressed, so analytics reads far less.
- [Passkeys](https://tidbit.legios.com.ar/passkeys/index.md): A way to sign in without a password, using your phone's or computer's lock instead.
- [Password manager](https://tidbit.legios.com.ar/password-manager/index.md): An encrypted vault that remembers a different strong password for every site.
- [Penetration testing](https://tidbit.legios.com.ar/penetration-testing/index.md): Hiring someone to break into your systems, with permission, before a criminal does.
- [Perplexity](https://tidbit.legios.com.ar/perplexity/index.md): An AI answer engine that searches the web and replies with a summary and its sources.
- [Personal data and GDPR](https://tidbit.legios.com.ar/personal-data-and-gdpr/index.md): Information about you, and the laws that say who can use it and how.
- [Phishing](https://tidbit.legios.com.ar/phishing/index.md): A fake message that tricks you into handing over a password or a payment.
- [Ping](https://tidbit.legios.com.ar/ping/index.md): A tiny "are you there?" message that tests a connection and times the reply.
- [Port](https://tidbit.legios.com.ar/port/index.md): The numbered door on a computer that says which program a connection is for.
- [Primary and foreign keys](https://tidbit.legios.com.ar/primary-and-foreign-keys/index.md): A primary key names each row uniquely; a foreign key points to a row in another table.
- [Process node](https://tidbit.legios.com.ar/process-node/index.md): The name of a generation of chip manufacturing, like "3 nm". A label, not a size.
- [Programming language](https://tidbit.legios.com.ar/programming-language/index.md): A precise, written language people use to give instructions to a computer.
- [Prompt](https://tidbit.legios.com.ar/prompt/index.md): Everything you send to an AI model: the question, the instructions, the context.
- [Prompt engineering](https://tidbit.legios.com.ar/prompt-engineering/index.md): Writing instructions for an AI model so it gives you what you actually need.
- [Proxy](https://tidbit.legios.com.ar/proxy/index.md): A middleman computer that makes requests on someone else's behalf.
- [Public-key cryptography](https://tidbit.legios.com.ar/public-key-cryptography/index.md): Two linked keys: one you share with everyone to lock, one you keep to unlock.
- [Python](https://tidbit.legios.com.ar/python/index.md): A popular programming language known for being easy to read and quick to write.
- [QR code](https://tidbit.legios.com.ar/qr-code/index.md): A square pattern of dots that a phone camera reads, usually to open a link.
- [Qualcomm](https://tidbit.legios.com.ar/qualcomm/index.md): Designs the chips, and owns key patents, that let phones talk to cell towers.
- [Quantum computer](https://tidbit.legios.com.ar/quantum-computer/index.md): A machine that uses quantum physics for a few specific problems. Not a faster PC.
- [RAG](https://tidbit.legios.com.ar/rag/index.md): Let the model look things up in your documents before it answers.
- [RAM](https://tidbit.legios.com.ar/ram/index.md): The computer's short-term memory: fast, small and wiped when you turn it off.
- [Raspberry Pi](https://tidbit.legios.com.ar/raspberry-pi/index.md): A cheap, credit-card-sized computer made for learning and tinkering.
- [Refactoring](https://tidbit.legios.com.ar/refactoring/index.md): Reorganizing code to make it clearer, without changing what it does.
- [Regex](https://tidbit.legios.com.ar/regex/index.md): A compact pattern language for finding and checking pieces of text.
- [Regions and Availability Zones](https://tidbit.legios.com.ar/regions-and-availability-zones/index.md): Where AWS physically lives: cities worldwide, each split into separate data centers.
- [Reinforcement learning](https://tidbit.legios.com.ar/reinforcement-learning/index.md): Learning by trial and error, guided by rewards for good outcomes.
- [REST API](https://tidbit.legios.com.ar/rest-api/index.md): The most common style of web API: things have URLs and you act on them with HTTP verbs.
- [Router](https://tidbit.legios.com.ar/router/index.md): The box that connects your devices to each other and to the internet.
- [SaaS, PaaS and IaaS](https://tidbit.legios.com.ar/saas-paas-iaas/index.md): Three ways to rent computing, depending on how much of the work you hand over.
- [Salesforce](https://tidbit.legios.com.ar/salesforce/index.md): The company that sells, as an online subscription, the software to manage customers.
- [Samsung](https://tidbit.legios.com.ar/samsung/index.md): Korean giant that sells phones and TVs, and makes much of the world's memory chips.
- [Sandboxing](https://tidbit.legios.com.ar/sandboxing/index.md): Running a program in a closed box so it cannot harm anything outside it.
- [SAP](https://tidbit.legios.com.ar/sap/index.md): The German company whose software runs the back office of many large businesses.
- [Satellite internet](https://tidbit.legios.com.ar/satellite-internet/index.md): Internet access beamed from space to a dish, where cables and cell towers don't reach.
- [SDK](https://tidbit.legios.com.ar/sdk/index.md): A kit of code, tools and docs a company provides so you can build for its platform.
- [Security operations center](https://tidbit.legios.com.ar/security-operations-center/index.md): The team that watches an organization's systems around the clock for attacks.
- [Semantic versioning](https://tidbit.legios.com.ar/semantic-versioning/index.md): A rule for version numbers like 2.4.1, so each part tells you how risky an update is.
- [Server](https://tidbit.legios.com.ar/server/index.md): A computer whose job is to answer requests from other computers, all day, every day.
- [Serverless](https://tidbit.legios.com.ar/serverless/index.md): Code that runs only when called; you never see or manage the server.
- [SIEM](https://tidbit.legios.com.ar/siem/index.md): The system that gathers security logs from everywhere and raises the alarm.
- [SLA](https://tidbit.legios.com.ar/sla/index.md): A written promise about how reliable a service will be, and what happens if it is not.
- [Social engineering](https://tidbit.legios.com.ar/social-engineering/index.md): Manipulating people, instead of machines, into giving away access or information.
- [Software library](https://tidbit.legios.com.ar/software-library/index.md): Ready-made code for a common task that programmers plug into their own programs.
- [Software testing](https://tidbit.legios.com.ar/software-testing/index.md): Checking that software does what it should, mostly with code that tests other code.
- [Source code](https://tidbit.legios.com.ar/source-code/index.md): The human-readable text that programmers write and that a program is built from.
- [Spam](https://tidbit.legios.com.ar/spam/index.md): Unwanted messages sent in bulk: ads, scams and junk you never asked for.
- [Spotify](https://tidbit.legios.com.ar/spotify/index.md): A Swedish streaming service for music and podcasts, free with ads or paid monthly.
- [Spreadsheet vs database](https://tidbit.legios.com.ar/spreadsheet-vs-database/index.md): Why a company that runs on Excel eventually needs a real database.
- [SQL](https://tidbit.legios.com.ar/sql/index.md): The language you use to ask a database questions.
- [SQL injection](https://tidbit.legios.com.ar/sql-injection/index.md): Typing text into a form that the database mistakes for its own instructions.
- [SSD](https://tidbit.legios.com.ar/ssd/index.md): Storage with no moving parts: where your files live when the power is off.
- [SSH](https://tidbit.legios.com.ar/ssh/index.md): An encrypted way to log in to another computer and type commands on it.
- [Stripe](https://tidbit.legios.com.ar/stripe/index.md): A company that lets websites and apps accept online payments with a few lines of code.
- [Subnet](https://tidbit.legios.com.ar/subnet/index.md): A slice of a network's IP addresses, grouped so its devices can talk directly.
- [System on a chip](https://tidbit.legios.com.ar/system-on-a-chip/index.md): One chip that holds a computer's main parts: CPU, GPU, memory control and more.
- [TCP and UDP](https://tidbit.legios.com.ar/tcp-and-udp/index.md): Two ways to send packets: TCP checks everything arrives, UDP just sends and moves on.
- [Technical debt](https://tidbit.legios.com.ar/technical-debt/index.md): The future cost of shortcuts taken in software today.
- [Terraform](https://tidbit.legios.com.ar/terraform/index.md): A popular tool for describing cloud infrastructure in files and creating it for you.
- [Tesla](https://tidbit.legios.com.ar/tesla/index.md): An electric car maker that treats the car as a computer on wheels.
- [TLS certificate](https://tidbit.legios.com.ar/tls-certificate/index.md): The ID card a website shows your browser to prove it is who it claims to be.
- [Token](https://tidbit.legios.com.ar/token/index.md): The small chunk of text a language model actually reads.
- [TPU](https://tidbit.legios.com.ar/tpu/index.md): Google's chip designed specifically for the math of neural networks.
- [Training and inference](https://tidbit.legios.com.ar/training-and-inference/index.md): Training builds the model once; inference is using it, millions of times a day.
- [Transformer](https://tidbit.legios.com.ar/transformer/index.md): The neural network design behind modern language models, built around 'attention'.
- [Transistor](https://tidbit.legios.com.ar/transistor/index.md): An electrically controlled switch, the basic building block of every chip.
- [TSMC](https://tidbit.legios.com.ar/tsmc/index.md): The factory that makes the world's most advanced chips for everyone else.
- [Two-factor authentication](https://tidbit.legios.com.ar/two-factor-authentication/index.md): A second proof that you are you, so a stolen password alone is not enough.
- [Unicode](https://tidbit.legios.com.ar/unicode/index.md): The universal numbering of every letter and symbol, and why accents sometimes break.
- [URL](https://tidbit.legios.com.ar/url/index.md): The full address of something on the web: protocol, site and path.
- [USB](https://tidbit.legios.com.ar/usb/index.md): The standard plug for connecting and charging almost everything.
- [Vector database](https://tidbit.legios.com.ar/vector-database/index.md): A database that finds things by similar meaning instead of exact matching words.
- [Video streaming](https://tidbit.legios.com.ar/video-streaming/index.md): Watching a video while it arrives in small pieces, instead of downloading it all first.
- [Virtual machine](https://tidbit.legios.com.ar/virtual-machine/index.md): A complete computer made of software, running inside a real one.
- [VLAN](https://tidbit.legios.com.ar/vlan/index.md): A way to split one physical network into several separate ones, using software rules.
- [VPN](https://tidbit.legios.com.ar/vpn/index.md): An encrypted tunnel that sends all your traffic through another network first.
- [VRAM](https://tidbit.legios.com.ar/vram/index.md): The memory built into a graphics card, where the GPU keeps what it is working on.
- [Vulnerability and CVE](https://tidbit.legios.com.ar/vulnerability-and-cve/index.md): A flaw that lets an attacker misuse software, and the public id that names it.
- [Web browser](https://tidbit.legios.com.ar/web-browser/index.md): The app that fetches web pages from the internet and draws them on your screen.
- [Web hosting](https://tidbit.legios.com.ar/web-hosting/index.md): Renting space on an always-on computer so your website is reachable by anyone.
- [Webhook](https://tidbit.legios.com.ar/webhook/index.md): A way for one service to call your app the moment something happens.
- [WebSocket](https://tidbit.legios.com.ar/websocket/index.md): A connection between browser and server that stays open, so both can talk anytime.
- [Wi-Fi](https://tidbit.legios.com.ar/wi-fi/index.md): Networking over radio waves: the internet without the cable, within a few rooms.
- [Wi-Fi security](https://tidbit.legios.com.ar/wifi-security/index.md): How a Wi-Fi password keeps neighbors out and scrambles what travels through the air.
- [Xiaomi](https://tidbit.legios.com.ar/xiaomi/index.md): A Chinese maker of phones and smart home gadgets, and more recently electric cars.
- [XML](https://tidbit.legios.com.ar/xml/index.md): A text format that wraps data in named tags, so both people and programs can read it.
- [Zero trust](https://tidbit.legios.com.ar/zero-trust/index.md): Security that checks every request, instead of trusting whatever is inside the network.