# Cloud

38 Cloud terms explained simply, ordered from basic to advanced. Start at the top if the topic is new to you.

## Basic

- [Alibaba](https://tidbit.legios.com.ar/alibaba/): China's giant of online marketplaces, which also runs a major cloud.
- [Amazon](https://tidbit.legios.com.ar/amazon/): An online store with its own delivery network, and the company that runs AWS.
- [Amazon S3](https://tidbit.legios.com.ar/amazon-s3/): A giant online drawer for files, rented by the gigabyte.
- [Cloud computing](https://tidbit.legios.com.ar/cloud-computing/): Renting computers over the internet instead of buying your own.
- [Container](https://tidbit.legios.com.ar/container/): A sealed box with a program and everything it needs to run anywhere.
- [Data center](https://tidbit.legios.com.ar/data-center/): A building full of servers where the internet, the cloud and AI actually run.
- [Google Cloud](https://tidbit.legios.com.ar/google-cloud/): Google's cloud business: computing, storage, data and AI services rented by the hour.
- [Microsoft](https://tidbit.legios.com.ar/microsoft/): The company of Windows and Office, now just as much a cloud company with Azure.
- [Netflix](https://tidbit.legios.com.ar/netflix/): A streaming service, and the engineering it built to deliver video to the whole world.
- [SaaS, PaaS and IaaS](https://tidbit.legios.com.ar/saas-paas-iaas/): Three ways to rent computing, depending on how much of the work you hand over.
- [Salesforce](https://tidbit.legios.com.ar/salesforce/): The company that sells, as an online subscription, the software to manage customers.
- [Server](https://tidbit.legios.com.ar/server/): A computer whose job is to answer requests from other computers, all day, every day.
- [SLA](https://tidbit.legios.com.ar/sla/): A written promise about how reliable a service will be, and what happens if it is not.
- [Spotify](https://tidbit.legios.com.ar/spotify/): A Swedish streaming service for music and podcasts, free with ads or paid monthly.
- [Virtual machine](https://tidbit.legios.com.ar/virtual-machine/): A complete computer made of software, running inside a real one.
- [Web hosting](https://tidbit.legios.com.ar/web-hosting/): Renting space on an always-on computer so your website is reachable by anyone.

## Intermediate

- [Amazon ECS and Fargate](https://tidbit.legios.com.ar/amazon-ecs-and-fargate/): AWS runs your containers; with Fargate you never see the servers at all.
- [Autoscaling](https://tidbit.legios.com.ar/autoscaling/): Adding and removing servers automatically as demand goes up and down.
- [AWS CloudFormation](https://tidbit.legios.com.ar/aws-cloudformation/): Describe your AWS infrastructure in a text file; AWS builds it exactly like that.
- [CDN](https://tidbit.legios.com.ar/cdn/): Copies of a website kept on servers around the world, close to whoever asks.
- [Data lake](https://tidbit.legios.com.ar/data-lake/): Cheap storage where all your data is kept as raw files, to be sorted out later.
- [Disaster recovery](https://tidbit.legios.com.ar/disaster-recovery/): The plan for getting systems and data back after a major failure.
- [Docker](https://tidbit.legios.com.ar/docker/): The tool that made containers easy: package an app once, run it anywhere.
- [Edge computing](https://tidbit.legios.com.ar/edge-computing/): Processing data close to where it is created, instead of in a distant data center.
- [FinOps](https://tidbit.legios.com.ar/finops/): Understanding and controlling cloud spending, as a job shared by engineers and finance.
- [High availability](https://tidbit.legios.com.ar/high-availability/): Designing a system so it keeps working when one of its parts fails.
- [Hybrid and multi-cloud](https://tidbit.legios.com.ar/hybrid-and-multi-cloud/): Running systems across your own servers and the cloud, or across several cloud providers.
- [Infrastructure as code](https://tidbit.legios.com.ar/infrastructure-as-code/): Describing servers, networks and databases in files instead of clicking.
- [Kubernetes](https://tidbit.legios.com.ar/kubernetes/): The system that runs and babysits containers across many machines.
- [Load balancer](https://tidbit.legios.com.ar/load-balancer/): The traffic cop that spreads incoming requests across many servers.
- [Object storage](https://tidbit.legios.com.ar/object-storage/): Files stored as whole named objects, reached over the web, almost without limit.
- [Serverless](https://tidbit.legios.com.ar/serverless/): Code that runs only when called; you never see or manage the server.
- [Terraform](https://tidbit.legios.com.ar/terraform/): A popular tool for describing cloud infrastructure in files and creating it for you.

## Advanced

- [Amazon EKS](https://tidbit.legios.com.ar/amazon-eks/): Kubernetes with the hard part, the control plane, run by AWS.
- [AWS CDK](https://tidbit.legios.com.ar/aws-cdk/): Describe your AWS infrastructure in a real programming language instead of YAML.
- [Data streaming](https://tidbit.legios.com.ar/data-streaming/): Processing data as a continuous flow of events, seconds after they happen.
- [Hypervisor](https://tidbit.legios.com.ar/hypervisor/): The software layer that splits one physical computer into many virtual machines.
- [Microservices](https://tidbit.legios.com.ar/microservices/): Building one application as many small services that each do one job.