Cost a workload
Work out what a small web shop costs to run on its own servers and in the cloud, over three years, in a spreadsheet.
Open the project: Cost a workloadCloud computing
What the cloud is, why companies moved to it, and the ideas every provider shares: service models, regions and zones, scaling, paying for use, and who is responsible for what.
Beginner · 10 topics · 2 projects · about 1 hour of reading
Step 8 of the DevOps engineer roadmap
Topics
- 014 min
What cloud computing is
Renting computers instead of buying them, and the five things that make a service a cloud.
- 025 min
Before the cloud
Buying and running your own servers, what that cost, and why most companies stopped.
- 034 min
How the cloud works
Data centres, virtual machines, and the APIs that let you create a server in a minute.
- 045 min
Service models
IaaS, PaaS, SaaS and serverless, and what you manage in each.
- 055 min
Deployment models
Public, private, hybrid and multi-cloud, and why a company picks one.
- 065 min
Regions and zones
Where the computers actually are, and how regions and availability zones keep a service running when a building fails.
- 075 min
Scaling and elasticity
Bigger machines or more machines, scaling down as well as up, and designing for machines that fail.
- 085 min
Paying for the cloud
Pay-as-you-go, reserved and spot prices, the costs people forget, and how bills surprise teams.
- 095 min
Shared responsibility
What the provider secures, what you secure, and how that line moves with the service model.
- 104 min
Cloud providers
AWS, Azure, Google Cloud and the rest: the same ideas under different names.
Projects
Do these after the topics. Each one runs on your own computer.
Plan a move to the cloud
Take a company's servers and write a one-page plan: what moves, which service model, how many zones, and who secures what.
Open the project: Plan a move to the cloud