There is nothing specific in Dynamics that is called a workload. Like any other system, Dynamics is a web app that has workload that is compromised of how many users use it and the functionality provided by the system. A dynamics system can have a high workload if used to do a lot of work by a lot of users, or a low workload if not.
The term workload in context of dynamics may also mean how much API requests are being made by the system (currently Dynamics has a limit on the API calls and after that you pay more money). Or in terms of Dynamics portal, a workload may mean how many users login into the portal (again, you got a price for the portal based on that number).
Unless you heard the term in a very specific term, please share it and I may be able to give more info.
Thank you
Omar
