Microsoft 365 vs Azure: What's the Difference?

Microsoft 365 and Azure are both "Microsoft cloud," and they share the same sign-in system, so it's easy to mix them up. In short: Microsoft 365 is software your team uses every day. Azure is infrastructure you build and run things on.

Microsoft 365: the tools your team works in

Microsoft 365 is a subscription to finished apps and services:

• Email and calendars (Exchange Online and Outlook)
• Teams for chat and meetings
• SharePoint and OneDrive for files
• Word, Excel and PowerPoint
• Security and device management in some plans, such as Intune and Defender in Business Premium

You pay per user, per month. Microsoft runs everything; your job is to configure it well.

Azure: infrastructure you build on

Azure is Microsoft's cloud platform for running your own systems:

• Virtual machines (servers in the cloud)
• Databases and storage
• Hosting for websites and internal apps
• Networking, VPNs and backup

You pay for what you use, often by the hour or by the gigabyte. You decide what to build, and you're responsible for keeping it secure and cost-efficient.

Where they overlap

Both use Microsoft Entra ID (formerly Azure Active Directory) for sign-in. The same user account that opens Outlook can be given access to Azure resources, and the same Conditional Access policies protect both. That's why Entra ID is usually the first thing we look at, whichever one you use.

Which one do you need?

• Most small and mid-sized businesses need Microsoft 365, and only that, to start.
• Add Azure when you have something to run: a line-of-business app, a file server you're moving off a closet in the office, a database, or backups you want to keep in the cloud.

Why it matters

Knowing the difference helps you budget correctly, ask vendors the right questions, and avoid paying for Azure services nobody is using.