Synchronous / Asynchronous Workflows – Quick Review

Synchronous => Real Time

Asynchronous => Background

• Background workflows always run in the context of the owner of the workflow,
  while Real time workflow gives you two options either to execute as the owner of the workflow or to execute as the user who made changes to the record.

Real time workflows has the ability to roll back changes if a failure occurs which is not the case for Background workflows.