Phase 1: Foundational Cloud Concepts

Welcome to Phase 1 of your AZ-900 journey! This phase is dedicated to establishing a robust understanding of the fundamental principles of cloud computing. Before diving into specific Azure services, it's essential to grasp the core concepts that define the cloud.

Here, the focus is on diligently mastering the established knowledge and core definitions that form the bedrock of cloud technology. We will delve into each concept from first principles, ensuring you grasp what it is, why it exists, and how it provides value.

The AZ-900 exam heavily assesses your comprehension of these foundational ideas. This phase emphasizes accurate recall and a deep understanding of the purpose and benefits of cloud computing, which is crucial for all subsequent learning.

Scenario: You are new to cloud technology and need to explain to a colleague why your company is considering moving its IT infrastructure to the cloud.

Reflection Question: How does a strong foundation in core cloud concepts (like scalability, high availability, and CapEx vs. OpEx) enable you to articulate the business value of cloud adoption, beyond just the technical details?

💡 Tip: As you learn each concept, try to explain it in simple terms, as if you were talking to someone non-technical. This will solidify your own understanding.