Will existing installs still work
We're pretty much stuck on Windows 7 at the moment for legacy kit but moved to office 365 when 2007 support for exchange 365 ended so the big question for me is whether existing installs of office 365 are going to stop working at this point or will they continue to limp along with no security updates until MS to decide to cut them off from their other services completely whenever that will be.
Open source would be great but we are dependant on a lot of Excel macros as well as other bits and pieces that we just can't move over.
Matt