Assignments in Microsoft Teams allow you to not only assign specific tasks to either the whole class, individuals or groups but providing ongoing feedback as well.
The feedback could be provided once the task is handed in either by assigning points for the task (with a record kept in the Grades Tab of the team), comments or the use of rubrics.
The use of feedback does not have to wait until the task is complete though. For general comments, you can use the feedback option to perhaps provide some general assistance but if you want to be even more specific in your guidance, using a collaborate online tool allows you drill deep down into the student response to provide that specific feedback that you would have done sitting side by side with the student. 
This is where using OneNote Class Notebook within Micorsoft Teams takes feedback to a whole new level.

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