📄️ Table of contents
Free discovery course on cloud computing in 7 pedagogical lessons. Understand IaaS, PaaS and SaaS, regions and availability zones, the shared responsibility model, the AWS vs Azure vs GCP comparison, cost control and multi-cloud.
📄️ 1 · The problem the cloud solves
Before the cloud, launching an online service required buying servers, forecasting the load three years out and tying up capital. This lesson explains the six structural problems of the owned datacenter that the cloud came to solve.
📄️ 2 · What is the cloud really?
Rigorous definition of cloud computing according to the five NIST characteristics, history since the launch of Amazon S3 in 2006, and debunking of the most widespread misconceptions about the cloud.
📄️ 3 · IaaS, PaaS, SaaS and serverless
Understand the cloud service models: IaaS, CaaS, PaaS, serverless FaaS and SaaS. Who manages exactly what, the shared responsibility model, and how to choose the right level of abstraction for your project.
📄️ 4 · Regions and high availability
Understand the geography of the cloud: regions, availability zones, points of presence and content delivery networks. How to choose your region, design a resilient architecture and interpret availability commitments.
📄️ 5 · AWS vs Azure vs Google Cloud
Objective comparison of AWS, Microsoft Azure and Google Cloud: strengths, weaknesses, pricing, ecosystem and use cases. With the European players OVHcloud, Scaleway and Hetzner, and the sovereignty question.
📄️ 6 · Understanding and controlling costs
Understand the cloud billing mechanisms, the seven traps that make a bill explode, the optimization levers (reserved instances, spot, automatic shutdown, tiered storage) and the FinOps approach.
📄️ 7 · Real use cases + FAQ
How Netflix, Spotify, the public sector and startups concretely use the cloud. Documented use cases, repatriation examples, and 14 frequent questions to get started with confidence.
📄️ 🏆 Quiz and attestation
Test your cloud knowledge with a free 5-question quiz, corrected and explained: IaaS, PaaS, SaaS, serverless, availability zones, costs, security.