What is a Microsoft account?
What is a Microsoft account used for?
A Microsoft personal account lets you manage your account and profile for all of Microsoft's products and services: Outlook.com, Office, Skype, OneDrive, Xbox Live, Bing, Microsoft Store, Windows, and MSN.
Microsoft account dashboard
Your Microsoft account dashboard is where you can keep tabs on your subscriptions and order history, organize your family's digital life, update your privacy and security settings, track the health and safety of your devices, and get rewards.

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Your info - for profile and personal details.
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Privacy - for privacy settings in your products and services.
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Security - for managing your password and how you verify signing in.
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Rewards - see points earned and how you can redeem them.
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Payment & billing - view your order history and payment options.
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Services & subscriptions - manage Microsoft 365 and Xbox subscriptions.
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Devices - view and register devices attached to your account.