MSDEVBUILD / azure

Cloud Concepts

Domain 1 · 25–30% of the AZ-900 exam

What the cloud actually is, why businesses moved to it, the cloud models and service types, and the benefits every Azure conversation is built on.

Start the first lesson ❯ 24 of 24 lessons ready

Lessons in this module

  1. 1 What is Cloud Computing? Cloud computing explained simply, with everyday examples, a real business scenario, interview questions and AZ-900 practice questions with answers.
  2. 2 What is Microsoft Azure? Microsoft Azure explained for beginners, with what it offers, how you use it, a real business example, interview questions and AZ-900 practice questions.
  3. 3 Why Companies Use the Cloud The real reasons companies move to the cloud: speed, cost, scale, reliability and security, with examples, interview questions and AZ-900 practice.
  4. 4 On-premises vs Cloud On-premises vs cloud compared on cost, control, scaling, security and maintenance, with examples, interview questions and AZ-900 practice.
  5. 5 Public Cloud The public cloud model explained simply, with multi-tenancy, benefits, trade-offs, real use cases, interview questions and AZ-900 practice questions.
  6. 6 Private Cloud Private cloud explained: how it differs from on-premises and public cloud, when to choose it, interview questions and AZ-900 practice questions.
  7. 7 Hybrid and Multi-cloud Hybrid cloud and multi-cloud explained simply, with Azure Arc, use cases for each cloud model, interview questions and AZ-900 practice questions.
  8. 8 IaaS – Infrastructure as a Service IaaS explained simply with Azure Virtual Machines, who manages what, real use cases, when not to use it, interview questions and AZ-900 practice questions.
  9. 9 PaaS – Platform as a Service PaaS explained simply with Azure App Service and Azure SQL Database, who manages what, use cases, limits, interview questions and AZ-900 practice questions.
  10. 10 SaaS – Software as a Service SaaS explained simply with Microsoft 365 and other examples, what you still manage, use cases, trade-offs, interview questions and AZ-900 practice questions.
  11. 11 Choosing IaaS, PaaS or SaaS IaaS vs PaaS vs SaaS compared side by side with the pizza analogy, a decision guide, use cases for each, interview questions and AZ-900 practice questions.
  12. 12 Shared Responsibility Model The cloud shared responsibility model explained with a clear chart for on-premises, IaaS, PaaS and SaaS, real examples, interview questions and AZ-900 practice.
  13. 13 Serverless Computing Serverless computing explained with Azure Functions and Logic Apps: event-driven code, pay-per-execution, interview questions and AZ-900 practice.
  14. 14 Consumption-Based Model The consumption-based model explained: pay for what you use, how Azure meters resources, cost traps, interview questions and AZ-900 practice.
  15. 15 Cloud Pricing Models Azure pricing models compared: pay-as-you-go, reservations, savings plans, Spot VMs and Hybrid Benefit, with interview questions and AZ-900 practice.
  16. 16 CapEx vs OpEx Capital expenditure vs operational expenditure explained with simple examples, cloud impact, a cost chart, interview questions and AZ-900 practice questions.
  17. 17 High Availability High availability in the cloud explained with SLAs, an uptime calculator, availability zones and real examples, plus interview questions and AZ-900 practice.
  18. 18 Scalability Cloud scalability explained, vertical (scale up) vs horizontal (scale out), with an interactive chart, Azure examples and AZ-900 practice questions.
  19. 19 Elasticity Cloud elasticity explained with autoscaling, an interactive demand chart, how it differs from scalability, interview questions and AZ-900 practice questions.
  20. 20 Reliability Cloud reliability explained: recovering from failures with zones, regions and disaster recovery, plus interview questions and AZ-900 practice.
  21. 21 Predictability Cloud predictability explained, covering performance and cost predictability, the Azure tools behind them, interview questions and AZ-900 practice.
  22. 22 Security in the Cloud The security benefits of the cloud explained: physical security, DDoS protection, patching and identity, with interview questions and AZ-900 practice.
  23. 23 Governance in the Cloud Cloud governance explained simply, with policies, compliance templates, auditing and Azure Policy, plus interview questions and AZ-900 practice.
  24. 24 Manageability Cloud manageability explained: management of the cloud (autoscale, monitoring) and in the cloud (portal, CLI, APIs), with AZ-900 practice.