Microsoft has officially marked User-Defined Functions in Power Apps Canvas apps as Generally Available (GA), empowering developers to write, test, and maintain reusable logic components within their applications. This launch enhances app maintainability by allowing logic to be modularized into named functions, making larger Power Apps projects easier to manage and understand.

Here’s what you need to know:

Why it matters:
UDFs let you extract common logic into reusable functions with parameters. This reduces duplication, keeps logic in sync, and makes your apps easier to scale, maintain, and test.
Example in action:
- Create a simple UDF, like converting Fahrenheit to Celsius, and reuse it across multiple controls.
- Add interactivity with sliders or labels to see results update instantly.
- Go further by building UDFs that perform actions, like adding entries to a collection and displaying notifications.