Office 365 tenant management can be quite challenging due to the various workloads, admin consoles and data sources that comprise Office 365. This is compounded by a very high rate of change and limited native cross-workload management capabilities.
These challenges multiply as the number of tenants increases. Managing five tenants is much more difficult than managing just one, and the degree of difficulty isn’t linear. As the number of tenants increases, many organizations review tenant consolidation regularly as it is difficult to manage multiple Office 365 tenants.
However, consolidation isn’t always possible. Some organizations need to retain several tenants to preserve the autonomy of administrative control for operating entities, business units or brands.