Extended support is ending for Dynamics AX 2009 SP1 on 10/21/21. It's time to seriously get a plan in place to move from your legacy Dynamics AX to a better experience with Dynamics 365 for Finance and Operations (D365FO). There are several areas to consider which will take time and planning to ensure your business gets the most from this migration. I hope this tip list helps planning your upgrade a little bit smoother.