Am really keen on exposing PowerApps / Flow news - this was provided from Microsoft Flow. You can read out the full post available on this link:

https://powerautomate.microsoft.com/en-us/blog/deeper-control-over-http-invocation-of-flows/

HTTP request trigger is a frequently used functionality that helps customers integrate Power Automate with other systems. This allows a flow to be started based on an HTTP call. Today, we are introducing OAuth support for HTTP request triggers for deeper control on what applications and users can invoke such automations.