AZ-204 Certification Practice Question #62

Question

You are developing an Azure Durable Function to manage an online ordering process.
The process must call an external API to gather product discount information.
You need to implement the Azure Durable Function.
Which Azure Durable Function types should you use? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.

Accepted Answer

An Azure Durable Function workflow requires two main components to implement this scenario: an **Orchestrator** function to coordinate the control flow (managing the online ordering process) and an **Activity** function to perform the actual I/O-bound or non-deterministic work (calling the external API to retrieve discount information). According to Microsoft's guidelines, orchestrator functions must be deterministic and must not call external APIs directly; instead, they must delegate network/API calls to activity functions. Durable Client functions are used only to start or query orchestrations, and Entity functions are designed for managing small pieces of state, making Orchestrator (A) and Activity (D) the correct answers.

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