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Which task can we perform with workflow but not with plugin

Difference between Asynchronous Plugin and Workflow ?

So many times I have been asked a question from my colleagues,

What is the difference between Async Plugin and Workflow, Since both are Asynchronous But What is the actual difference between them and When should i use Workflow and When should I use Async Plugin ?

Answer :

My Answer is always "Depends", the right approach is determined by the Characteristics of the task that you are trying to accomplish.

Following Matrix show the difference between the same :

Requirement	Use Plug-in	Use Workflow
Needs a synchronous action to happen before or after an event occurs Or Need to perform a task that has to completed within 2 Sec	Yes	No
The logic needs to be executed while offline	Yes	No
Needs elevation of privileges (impersonation) Or Perform data operations on behalf of another system user	Yes	No
Needs to execute on events other than assign, create, update, set state	Yes	No
The process/logic may take a long time to complete or will be a persistent process (multiple long running steps)	No	Yes
End users will need to modify the process logic	No	Yes
Child sub processes will be triggered	No	Yes