Testing the integrations with other systems that have been developed is just as important as the features and functional testing of the product itself. Integration testing is performed across applications in order to verify the seamless flow of information. All individual applications must be tested independently and made ready for integration testing. You will need an integrated environment across applications to perform this testing. For example, Finance and Operations requires integration with the CRM system; in this testing process, you will probably create customers in the CRM system, and you will expect them to flow to Finance and Operations.

Next, you will probably test the creation and inventory of products in Finance and Operations, and ensure that it flows back into the CRM system, so that the salespeople can sell it to the customers. Finally, you will create quotes in the CRM system and you will expect to get sales order created, shipped, invoiced, and payment collected in Microsoft Dynamics 365 for Finance and Operations (D365FO).