A common security mistake is to not “cut up” your online “credit cards”. So often we just abandon digital assets not realizing that asset can get compromised and our identity as a result impersonated.

One example that Ive seen this happen is when Office365 tenants are merged, transferred, or otherwise decommissioned from productivity. We go through all the effort to build the new tenant, migrate the data, cancel the subscription, and in some cases we try to delete the tenant, but don’t see the option.

Truth is, deleting your tenant isn’t available in the Office Admin Center. You have to navigate to your domain in the Azure Admin Portal to finally delete your tenant. Unfortunately it can’t be done until 72 hours after you delete your subscription.

Microsoft recently updated the process and made it much easier.

https://docs.microsoft.com/en-us/azure/active-directory/users-groups-roles/directory-delete-howto