Many organizations that utilize D365 implement multiple applications. A common pair is D365 Finance and Operations + D365 Customer Service (and Omnichannel Customer Service).

Omnichannel provides capabilities to open external websites in tabs to streamline the user experience. The capabilities are enables to open the call center screen but only if the customer is using D365 e-Commerce (https://learn.microsoft.com/en-us/dynamics365/commerce/dev-itpro/commerce-chat-module#create-a-new-application-tab-that-loads-commerce-headquarters-in-an-iframe-module).

Please enable the ability for D365 Finance and Operations to be opened via iframe from other D365 applications.

Think about the time saving for a customer service agent if they no longer have to open another tab, navigate to the proper screen, search and select the customer. The functionality and technical solution is there to make this work, but the iframe barrier is blocking what could be a great use case.