We are currently in the process of migrating from Altiris to Workspace One. It has been a challenging journey but we are making progress and I believe that it will be a good shift for us going forward. I'll try to comment on a few of the biggest things we've noticed so far in our implementation. Note that we are running things in parallel during the conversion.
Device vs User basis
WS1 is user centric while Altiris is device based for management. This can be a big paradigm shift for managing systems so be sure you understand those implications. We have had issues with security due to device based filters being overwritten by user based policies in restricted subnets.
WS1 is not an asset management solution. Our Altiris instance includes Asset Management modules that help to monitor our endpoint lifecycles. WS1 is not built for that and will not give you what you need to properly track them. We are moving all Asset tracking into Service Now.
I personally feel that WS1 has the upper hand in this area, but I'm sure many long time Altiris admins will disagree. Proper ring management seems to be a constant promise from WS1 that has not made it live yet, so that is a disappointment. Freestyle Orchestrator gives you all the tools you could need and is being further integrated through the ecosystem.
Altiris reporting is powerful, but it follows older principles for distribution in our environment. Having fully interactive dashboards with drill down vs an emailed sql report is a big change. Having the automation capabilities of Intelligence is a huge advantage for WS1.
This is just my personal hot takes on the switch for us, so your mileage may vary.
John Cross-Sarvis John.Cross-Sarvis@PortlandOregon.gov