Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Mark,
I suggest you refer to the Security white paper for Office 365 in this link: https://products.office.com/en/business/office-365-trust-center-welcome.
Besides, Microsoft Planner is included with Office 365 Enterprise (E1, E3, E4, and E5), Office 365 Education (E1, E3, E4, and E5), Office 365 Business Essentials, and Office 365 Business Premium, and is designed to work with several different browsers. For more information about Planner, you can refer to this article. You can also view Planner service health in Office 365 admin center if you are an admin.
Go to Office 365 admin center> Health> Service health.
Regards,
Yoga
[Updated by Yoga Yao MSFT, 15:33 PM, Nov 1, 2016 (UTC)]