Microsoft 365 Copilot sits inside the applications your team already uses and, for an additional per-user monthly cost, offers to draft, summarise and analyse on their behalf.
The marketing is confident. The reality is more mixed — genuinely useful for some roles, underwhelming for others. Here is a straight assessment of where it earns its money.
Where it genuinely helps
Meeting summaries. If your organisation lives in Teams, this is consistently the strongest feature. Recaps, decisions and actions from a recorded meeting, without anyone taking notes. For people who spend their day in back-to-back calls, this alone can justify the cost.
Getting past the blank page. A first draft of a proposal, a policy, a long email. It is rarely what you send, but rewriting an adequate draft is faster than starting cold.
Catching up quickly. Summarising a long email thread or a document you have been copied into. Useful precisely at the moments the day is getting away from you.
Spreadsheet work for non-experts. Describing what you want in plain English and getting a formula is a genuine unlock for people who are not confident in Excel.
Where it disappoints
Anything requiring real judgement. It is a confident writer, not a thinker. It will produce a plausible strategy document with no strategy in it.
Accuracy on your own numbers. It can misread your data or state things with unearned confidence. Everything it produces about facts needs checking, which erodes some of the time saved.
Roles that do not live in Office. If someone spends their day in a CRM, a design tool or on the workshop floor, there is far less for Copilot to help with.
Getting good results without learning how. The gap between a vague request and a specific one is enormous. Teams who invest an hour in learning to prompt well get dramatically more out of it.
The bit most people skip: your permissions
This is the single most important thing to sort out before buying, and it catches organisations out repeatedly.
Copilot can see whatever the person using it can see. If your SharePoint and OneDrive permissions have drifted over the years — and in most businesses they have — then documents which were technically accessible but practically buried become instantly findable.
Nobody notices that the whole company can open the folder containing salary information, right up until someone asks Copilot a question and it answers helpfully.
Copilot did not create that problem. It surfaces it. But it will surface it on your behalf, at speed, to whoever asks.
So: review permissions first. Find out what is genuinely over-shared, particularly in HR, finance and leadership areas, and fix it before you switch anyone on.
How to decide
Do not roll it out to everyone at once. Pick a small group whose work it should genuinely suit — people in a lot of meetings, people producing a lot of written work — and run it for a month.
Then ask them a specific question. Not “do you like it” but “what would you lose if I took it away tomorrow”. The answers are usually clear in both directions.
Work out the annual cost for the licences you are considering and weigh it against what you learn. For some roles it pays for itself in recovered hours. For others it is an expensive novelty, and that is worth finding out over one month with five people rather than a year with forty.
The bottom line
Copilot is a real productivity gain for meeting-heavy and writing-heavy roles, and close to irrelevant for others. Fix your file permissions before you deploy it, pilot it with a small group, and buy it for the roles where it demonstrably earns its cost rather than across the board.
FAQ
Is our data used to train Microsoft’s models? Microsoft’s commercial terms state that business tenant data is not used to train the underlying models. It is worth reading the current terms for your specific licence rather than relying on general reassurance.
Do we need a particular licence first? Copilot sits on top of an eligible Microsoft 365 subscription. Check your current plan qualifies before budgeting for it.
What is the single most common mistake? Deploying it before reviewing file permissions. Copilot makes over-shared content easy to find, and that discovery is much better made in advance than by an employee.
