I'm trying to determine if it's a task I should tackle myself or potentially invest in pro services from a specialist. I'm pretty experienced with EPM now with over 6 years as primary admin on it and have been through 2 upgrades with specialists in the past and they didn't look too bad but specialists always know a few useful tricks.
We currently use 2016.3 for provisioning, software distribution and patching. One primary and two much smaller sites, around 700 clients (win7/win10). We use it pretty heavily so downtime more than 2 days would be a problem.
I'd also like to know if I tackle it, will an in-place core upgrade be a good idea vs a new core and migrate clients. Current core server is VM so with snapshots and SQL backups, I could roll-back with good confidence.
I'm leaning towards doing it myself with in-place core upgrade and roll out the clients over a month or so.
Thanks for your thoughts.
Pete