Should we completely rely on microsoft to provide us the saas services and no questions asked or should we consider having our on DR plan for the office365 services ? . Following are the questions we have, is customer having any leverage to trigger a office365 failover. can we create a sandbox instance and populate it with prod data as a test ? how is the data resiliency designed , how do we find the datacenters involved? If there are any microsoft guidance for customers to do their own disaster recovery plan and tests. kindly share the link. possibly also highlighting what is customers responsibilty and microsoft responsibilty for all microsoft o365 saas services will be helpful.