Why Microsoft 365 is Taking Over

Most businesses end up on Microsoft 365 for email and then stop. The licence you’re already paying for usually includes file storage, document collaboration, video calls, device management and a set of security controls that go unused for years.

Here’s what’s actually in it, how a migration should run, and where SharePoint fits for a business that works from more than one place.

What you’re probably already paying for

On Business Standard or Business Premium, beyond Outlook and the Office apps:

  • 1 TB of OneDrive per user — enough that a local file server is often unnecessary
  • SharePoint for shared company files, with version history and permissions
  • Teams for calls, chat and screen sharing
  • Multi-factor authentication, included and free — the single highest-value security control available to you
  • Conditional access and device management (Business Premium) — control which devices reach company data
  • Retention and legal hold, which matter more than people expect when a dispute arises

If you’re on Business Basic or Standard and have compliance obligations or staff using personal devices, Premium is usually worth the difference for the security controls alone.

How a migration should actually run

Migrations go wrong in predictable ways: mail lands mid-move, permissions come across wrong, and nobody warned the team. A competent migration follows roughly this order.

  1. Audit first. How many mailboxes, how large, how much shared file data, which shared calendars and distribution lists, and which line-of-business applications send mail through the current system. That last one causes most post-migration surprises.
  2. Decide what doesn’t come. Fifteen years of ex-employee mailboxes and a shared drive with four copies of everything — migrating that faithfully just moves the mess. Archive it instead.
  3. Design the file structure before moving files, not after. This is where most SharePoint implementations fail.
  4. Pre-stage the data, then run a final delta sync at cutover, so the switch is short rather than a weekend of waiting.
  5. Cut over out of hours with mail flow tested before anyone arrives.
  6. Turn on MFA and conditional access as part of the project, not “later.” Later doesn’t come.
  7. Be present the first morning. Most tickets arrive in the first four hours and most are five-minute fixes.

For a 25-person business with a single mail system and a tidy file share, expect one to two weeks end to end. Multiple sites, a legacy on-premise server or a messy shared drive push that out.

Where SharePoint fits — and where it doesn’t

SharePoint replaces the shared drive. Done well it’s better in the ways that matter to a business with people off site: files reachable from a truck or a trailer without a VPN, version history when someone overwrites a drawing, and permissions by team rather than by folder sprawl.

It works well for documents people collaborate on — drawings, submittals, RFIs, contracts, policies, estimating templates. Structure it around how work actually flows (by project, by client, by department) rather than mirroring whatever the old G:\ drive looked like.

It works badly for very large media libraries, databases, and anything an application needs to open with a file lock. Accounting and estimating software with a shared data file usually still wants a proper server or a hosted desktop — check before you assume everything can move.

The mistakes worth avoiding

  • Assuming Microsoft backs up your data. They keep the service running; retention of deleted items is limited and is not a backup. If a mailbox is wiped or ransomware encrypts OneDrive, you want a third-party backup. Most businesses discover this at the worst moment.
  • Lifting the old folder structure across unchanged. Migration is the one chance you’ll get to fix it.
  • Leaving MFA off because it’s inconvenient. It’s included, it’s free, and it stops the overwhelming majority of account compromises.
  • Leaving ex-employee accounts licensed — a recurring cost and a standing security risk.

If you’re weighing a move, or you’re on Microsoft 365 already and suspect you’re using a fraction of it, we’re happy to look at what you have — get in touch, or read more about our cloud hosting solutions.

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