Microsoft 365 Apps & Services Explained

1 min readPublished 22 Jul 2026

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Microsoft 365 is far more than Office — it's an identity-driven platform of cloud services.

Interactive explainer

Microsoft 365 Service Map

How identity, productivity, security and administration fit together.

Tap or hover a part to learn more.

Identity: Entra ID

The foundation.

Microsoft Entra ID (formerly Azure AD) underpins all of Microsoft 365 — every user, licence and access decision flows through it. Learn it once in Windows Fundamentals; it applies everywhere.

Check your understanding

1. What underpins identity across all of Microsoft 365?

2. Which handles data governance and compliance?

Keep learning

Microsoft 365 Fundamentals Microsoft Entra ID CompTIA Security+

Practise this in AI Interview™

The core services

Exchange Online — enterprise email and calendars.
Microsoft Teams — chat, meetings and the collaboration hub.
SharePoint Online — intranet sites and document libraries.
OneDrive — personal cloud file storage and sync.

Teams sits on top of SharePoint (files) and Exchange (calendar), so understanding how they connect is key to support. Everything is governed by Entra ID identity.

Interview Intelligence

How this topic actually shows up in interviews — and how to demonstrate you understand it.

Why employers ask about this

M365 support is a common first IT job; employers check you understand the services and how they connect.

Technical questions

How do Teams, SharePoint and Exchange relate?+

Teams stores files in SharePoint and uses Exchange calendars — one connected platform.

Behavioural questions

Tell me about supporting users across email and collaboration tools.+

Show empathy, structured troubleshooting and knowing where data lives.

Real-world scenarios

“A user can't see files shared in a Teams channel.”+

Expected answer: Check the underlying SharePoint permissions, since Teams files live in SharePoint.

Practise in AI Interview™Rehearse these questions, scored.Plan with Career Coach™A personalised path to your goal.Evidence it in Career Passport™Prove this skill to employers.

Employability Intelligence

Where this knowledge takes you — the jobs, skills and certifications it feeds into.

Relevant roles

Help Desk AnalystDesktop SupportM365 Administrator

Skills you're proving

Microsoft 365CollaborationSupport

Recommended certifications

CompTIA Security+

Career progression

M365 Fundamentals → MS-900 → M365/Azure Administrator.

What employers expect

That you can support and help secure the Microsoft 365 environment most organisations rely on.

Frequently asked questions

Is Microsoft 365 just Office?

No — it's an identity-driven cloud platform including Exchange, Teams, SharePoint, OneDrive and security tooling.

How do Teams and SharePoint relate?

Teams stores its files in SharePoint and uses Exchange for calendars, so they're deeply connected.

Where are OneDrive files stored?

In the Microsoft cloud, synced to devices and governed by your organisation's policies.

Practise what you've learned

Turn this guide into real, evidenced progress

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Missiora is an AI Employability Intelligence platform. Our resources are researched and reviewed by the Missiora team to help you measure, improve and prove your career readiness.