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Microsoft AZ-204 Azure Developer Associate guide
AZ-204 assesses the practical skills used to design, build, test, deploy and maintain cloud applications on Microsoft Azure. It is not simply a catalog of Azure services: a candidate should be able to select an appropriate service, use an SDK or API safely, handle identity and configuration, and diagnose an application after release. Verify the active certification page and current skills measured on Microsoft Learn before scheduling.
What to study
- Compute: select and implement application hosting with services such as web applications, functions and containers; understand scaling and deployment implications.
- Storage and data: use Azure storage services appropriately, protect access, handle data consistency and build resilient data interactions.
- Security: Microsoft Entra ID authentication, authorization, managed identities, secrets and secure application configuration.
- Integration: API development, event-driven and message-based workflows, and reliable communication between services.
- Monitoring and optimization: application telemetry, logging, error analysis, performance signals and cost-aware design choices.
Prepare by building an application lifecycle
Create a small Azure application in a personal or authorized subscription. Give it a clear boundary: authenticate users or services, store a small amount of data, publish an API or event, and add monitoring before declaring it complete. Then rehearse a failure such as a missing configuration value, denied identity permission or delayed message. The useful outcome is a diagnosis based on telemetry, not a memorized portal sequence.
Map each lab decision to the official skills measured. Explain why a managed identity is preferable to embedded credentials, what happens when a dependency is unavailable, and how the deployment can be verified or rolled back. These explanations turn service familiarity into developer-level judgment.
Who should take it
AZ-204 suits developers who build or support Azure-hosted applications. Comfort with one programming language, HTTP APIs, source control and basic cloud concepts makes preparation more productive. Infrastructure experience helps, but the focus is application implementation and operations.
FAQ
Is AZ-204 only for web developers?
No. The scope includes APIs, functions, messaging, storage, identity, monitoring and integrations used across application types.
Where can I confirm the current scope?
Use Microsoft's AZ-204 certification page and its linked skills-measured document; they supersede third-party summaries.