Hi #CL09KU1K7 I'm new to Prefect, if I'm using prefect Cloud, does it means that that all infrastructure is managed by Prefect, or I got it wrong?

Prefect Cloud manages none of your infrastructure, that's one of its big selling points. https://www.prefect.io/why-prefect/hybrid-model All code is executed on your hardware (on-prem or in the cloud), not on Prefect's hardware. Prefect Cloud is basically the workflow manager / scheduler / log viewer for all the code that is actually run on your hardware.