Microsoft Defender Threat Intelligence and Sentinel integration deep dive

We use SOPHOS endpoint MDR (managed detection and response) for our endpoints and servers. I would like to find out what the Microsoft equivalent for these products would be and the licensing model required for budgetary and decision making. We want to be on a Microsoft Solution by September of this year. That includes purchase, deployment and enforcement. Can you help me identify what and who I should be talking to at Microsoft for this information?