Final answer:
A software/web developer can use Azure Functions for event-triggered tasks like two-factor authentication operations, benefitting from its serverless nature and increased security.
Step-by-step explanation:
A developer who has built a 2 Factor Authentication app on Azure and is looking to park separate events or functions that are only triggered upon certain actions, such as a customer attempting to authenticate, should consider using Azure Functions. Azure Functions is a serverless compute service that allows you to run event-triggered code without having to explicitly provision or manage infrastructure. This could be an ideal solution for handling tasks like sending out authentication requests, processing verification codes, and other such two-factor authentication processes, which are critical for increased security for individuals. With Azure Functions, developers can write code that reacts to various events in Azure, external services, or on-premises systems, effectively building a responsive, event-driven application.