Which trigger type is recommended to run a flow when a user presses a button in a canvas app?

The recommended trigger type to run a flow when a user presses a button in a canvas app is the PowerApps trigger. This trigger is specifically designed to integrate with PowerApps, allowing seamless communication between PowerApps and Power Automate. When the button in the canvas app is pressed, the PowerApps trigger initiates the flow, enabling the app to perform actions such as updating a database, sending notifications, or processing data based on user input.

This integration is particularly beneficial because it simplifies the user experience; users can initiate complex workflows directly from familiar app interactions. The PowerApps trigger can pass data from the app to the flow, which allows for customized processing tailored to the user's actions within the app.

The other trigger types listed do not suit this specific scenario. Scheduled triggers are used for flows that need to run at predetermined times, such as daily data processing. Timer triggers operate on a specific schedule, but do not respond to user actions in real-time. HTTP request triggers are designed to activate flows via an external HTTP call, which is not applicable when the action is specifically tied to user interaction within a PowerApps environment.