Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Although the email looks to actually be coming from the Microsoft account support address, I believe they've been hacked. Log into your Hotmail/Outlook/Live account and follow the link to your activity from your profile page. You'll see that the email is a phishing attempt because you won't see that Russian activity there. Do not follow links from that email. I urge you to set up two factor authentication or use the Microsoft authenticator app to make your account completely passwordless. This makes it very near impossible for anyone to actually hack your account.