What is the difference between Azure Functions and Web
Answer: PI? Strong Answer: Feature Azure Function Web API Execution Event-driven Request-drive Scaling Auto Manual/Auto Use case Background jobs Business APIs Real-world Example: API → user requests Function → email sending
What interviewers expect
- A clear definition tied to Azure in Microsoft Azure projects
- Trade-offs (performance, maintainability, security, cost)
- When you would and would not use it in production
Real-world example
In a production Microsoft Azure application, teams apply this when handling user-facing features or integration boundaries. For example, you might use it during a sprint where reliability and observability matter—logging metrics, validating edge cases, and documenting the decision in an ADR so future developers understand why the approach was chosen.
How to explain in the interview
- Define the concept in one or two sentences.
- Context — where it fits in Microsoft Azure architecture.
- Example — a specific project, bug, or performance win.
- Trade-off — what you gain vs what you sacrifice.
Tip: Practice aloud on Toolliyo mock interview or the Interview Q&A section before your real interview.