Hi Experts,
One of our customer raised the below questions:
They want to switch from Skype for Business Server on-premises to Office 365 Skype for Business Online. They cannot configure hybrid due to security constraints. They don't need to retain any data, such as history or user contacts. They are happy to proceed with a big-bang approach. They intend to remove all users from Skype for Business Server and then switch DNS records to point users to Skype for Business Online.
They have a number of questions:
1. Do they need to remove/deactivate users from Skype for Business Server before pointing them to Skype for Business Online? UPN and SIP is identical between users in Skype for Business Server on-premises and Skype for Business Online.
2. Can they just replace the internal and external Skype for Business Server DNS records with the Skype for Business Online DNS records and expect users to automatically connect? Again, no data needs to be retained. ADFS and SSO is configured and all devices are domain-joined -
3. Some users have a number of existing meetings, both recurring and non-recurring. What will happen to these after the switch? Do they need recreating?
4. could you please confirm the behavior of external communications in Skype for Business Online. If external communications is enabled at the organization level, does this override per-user settings (In user settings if we disable it, will it allow that user to do external communication)? The customer needs a definitive answer but we can't find any documentation to confirm expected behavior, and testing is slow due to latency after changing settings.
Please help. Many thanks.