Hi @Neetu Neetu ,
Thank you for posting query in Microsoft Q&A Platform.
Let me add little more details to above explanation.
ln Simple words, Web activity make API call thats it not extra work or no check point from it to see if API is invoking any call back URL or not. Whereas, webhook activity makes API call and waits for call back URL to get invoke by API. If call back URL get invoke, then only webhook activity marks its execution as successful.
Note, call back URL is URL which your webhook activity sends to API in request, now API should have logic to invoke that call back URL. webhook activity considers call back URL invoke as a signal to consider as API execution is successful and marks activity execution as successful.
Please check below two video to get better idea of both of these.
Hope this helps. Please let me know if any further queries.
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