Developing Solutions for Microsoft Azure (AZ-204) Practice Exam

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What is required for a function to run in Azure Functions?

Binding
Trigger
Both triggers and bindings
Service endpoint

The correct answer is: Trigger

In Azure Functions, a trigger is essential for the function to execute. Triggers define how and when a function is invoked. They can be activated by various events, such as an HTTP request, messages on a queue, or a timer. Without a trigger, the function would not know when to run, making it the fundamental component that initiates function execution. Bindings, while they enhance the functionality of Azure Functions, are not strictly necessary for a function to operate. Bindings allow the function to integrate with other services and facilitate input and output operations, but they do not influence the function's ability to execute on their own. Therefore, a function can run solely with a trigger, making it the primary requirement for execution.