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: It does not include future version upgrades or the cloud storage (OneDrive) and AI features (Copilot) that come with Microsoft 365. Lightweight Subscription Options

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: Includes professional business email via Outlook on the web and mobile, but requires you to use the online versions of other Office apps. Comparison Table: Buy vs. Subscribe Which license do I need to purchase? - Microsoft Q&A : It does not include future version upgrades