Identity Provider (IdP)

Access to Solutions2Share applications is 100% based on Microsoft Azure Active Directory (AAD) as the IdP for authentication.
Especially, it means that:

• User authentication is performed against your own AAD, just like any other regular Office 365 authentication process.
• You can enable, disable and manage individual permissions grants from your own AAD.
• We do not access, process or store a password.
• Our authentication mechanism is compatible with any MFA authentication method supported by AAD.

Single Sign On (SSO)

Single Sign On (SSO) for Microsoft Teams custom applications, such as Teams Manager, is not yet fully supported by Microsoft, as the current SSO implementation only grants consent for user-level permissions (email, profile, offline_access, openid), but not for other APIs (such as Microsoft Graph).
For more information see 

 Microsoft Teams SSO for custom apps known limitations

Service account authentication details

For service account authentication details, please refer to Microsoft Graph Permissions