Hello I would like to ask a question related to flows. Lets say I have a simple ETL flow divided into three tasks Extract task, transform task and load task. If i want to run separate tasks from the flow, lets say I want to execute extract only, or extract and transform. Is something like that possible ?

Yeah check this and split them into their own flows

Also feels important to mention that Prefect 2.0 has a much smoother way to manage the flows in flow paradigm. See here.