Like Google (US) or Zoho (Indian).
I do not know European companies providing a cloud solution easy to deploy (I wild truly be glad to know one).
It's open source so you can even self host. Should be more than enough for most comapnies.
Not sure how difficult the set-up process for an enterprise environment is, I only used the docker version before. But should be viable and if a company has Money for Microsoft365 they should have money to pay to someone to set it up manage for them.
While something like NextCloud or Seafile it is fine for personal use or for small teams it is no way close to something like Microsoft 365 with the extensive backend it provides out of the box. Not to mention email integration.
Again, this is from the perspective of someone who uses and develops open source software and hots a lot of services for personal/family ise, but also from someone who knows the complexity and shitbat crazy wrchitectures you find in large, distributed companies.
If we managed to have in Europe something similar to Zoho, driven by European laws, that would be fantastic. We do not, and this is a real shame.
> But should be viable and if a company has Money for Microsoft365 they should have money to pay to someone to set it up manage for them.
Microsoft 365 is expensive, but the expense of running a home-made solution for a large company is not only the pure management, but also the ability to have hope if there is a problem. I have raised issues for Nextcloud (some of them quite impacting from a security monitoring perspective) and the community replies were horrible. If NextCloud does not monitor the community forum when someone raises such issues then I cannot have any trust that they will fix it for a paying user.
It's just a question of money.
Having the US spy on Europeans is also very costly.