Microsoft 365 is core to email, identity and collaboration for many businesses, so its configuration directly determines continuity. Common exposure: no strong identity protection, no backup of mail and SharePoint beyond native retention, or no recovery plan if an administrator account is compromised.
Continuity priorities for Microsoft 365 include enforced multi-factor authentication, controlled administrative access, licensing and data-export knowledge, and a tested recovery plan.
Microsoft 365 is a service, not a guarantee. Native retention is not a backup, and a compromised tenant can be locked out. Protect identity first, then data, then document recovery.