Hi
A quick post on some common questions with regards to O365 and SharePoint Online.
Workplace
https://products.office.com/en-us/office-system-requirements
Device Support
Office Online browser support
Office 365 supports both IPv6 and IPv4; however, not all Office 365 features are fully enabled with IPv6. This means that you must use both IPv4 and IPv6 to connect to Office 365
Network planning and performance tuning for Office 365
Network and migration planning for Office 365
SharePoint Online software boundaries and limits
Plan customizations, solutions, and apps for SharePoint Online
SharePoint Add-ins
https://msdn.microsoft.com/EN-US/library/office/fp179930.aspx
O365 API Catalog
https://msdn.microsoft.com/en-us/office/office365/api/api-catalog
Microsoft Graph
https://developer.microsoft.com/en-us/graph/
O365 uses encryption to protect and secure data and communications
https://technet.microsoft.com/en-us/library/dn569286.aspx
O365 Your data
https://www.microsoft.com/en-us/trustcenter/privacy/you-own-your-data
O365 Compliance
All compliance reports are accessible in the Service Assurance in the O365 Security & Compliance Center https://support.office.com/en-us/article/Service-assurance-in-the-Office-365-Security-Compliance-Center-47e8b964-4b09-44f7-a2d7-b8a06e8e389c?ui=en-US&rs=en-US&ad=US
O365 Data location
Microsoft provides O365 from different datacenters located world-wide. The exact location for DSM would depend upon of the tenants chosen-location (i.e. West Europe).
https://o365datacentermap.azurewebsites.net/
O365 Data encryption
O365 data are encrypted at rest, in transit and in some scenarios at file level.
https://www.microsoft.com/en-us/trustcenter/security/encryption#Office-365
O365 Engaging with our Support
Office 365 Customer Lockbox feature which will help a customer to control how a Microsoft support engineer is going to access customer data during a scenario where customers have raised a support request to investigate some service issues related to customers Office 365 tenant.
https://blogs.office.com/2015/04/21/announcing-customer-lockbox-for-office-365/
O365 IT management and privileged access to the services
Office 365 comes with a set of admin roles that you can assign to users in your organization. Each admin role maps to common business functions, and gives people in your organization permissions to do specific tasks in the Office 365 admin center.
Stay Online !