Hello, We have CAS and 5 Primaries currently on ConfigMgr 2012 SP2 (Build 8239), with SQL Server 2012, ADK 8.1, MDT 2013 running Server 2008 R2 We plan to upgrade it to latest versions (or close to), here is our plan of action
1) SCCM Upgrade to 1511, then to 1602 2) Step 1) allows us to do in place Upgrade of OS to Server 2012 R2 3) Then SQL Upgrade from 2012 to either 2014/2016 4) ADK 8.1 to 1511 5) MDT 2013 to MDT 2013 Update 2 6) WSUS needs to be un/reinstalled along with SUP roles Appreciate your suggestions in the order or any learnings/lessons if any of you tried this or similar upgrade. Our goal is twofold, 1) ensure all in place upgrades happens, so no parallel infra needs to be built and 2) to ensure Infra runs latest versions in all components as much possible Kind Regards, Vasu Miriyala This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message.

