Microsoft Teams channels versus chats: a simple structure for a small office

How chats and channels differ

A chat is a conversation between named people. It works like messaging on a phone: quick, informal and private to those included. Files shared in a chat are stored in the sender's OneDrive, which matters later when that person leaves. Chats are ideal for asking a colleague a quick question, arranging lunch, or a short back-and-forth that nobody else will ever need to find again.

A channel lives inside a team. Everyone in the team can see it, conversations are organised as threaded posts with replies underneath, and files shared there are stored in the team's SharePoint library, owned by the business rather than any one person. Channels suit ongoing work: a client account, a department's day-to-day, a project from quote to handover. New people joining the team can scroll back and see what was decided and why.

The group chat trap

Most small offices start with group chats because they feel familiar. Within a year there are dozens of them with overlapping members and names like Project and Project 2, and finding the decision about a client's variation means searching through all of them. Files are scattered across individual OneDrives. When a staff member leaves, files they shared in chats can become inaccessible once their account is removed.

Moving ongoing work into channels fixes this. A rule of thumb that works well: if the conversation will matter in a month, or more than four people need it, it belongs in a channel. If it is a quick question that will be irrelevant by tomorrow, a chat is fine.

Meeting chats are a third category people forget. Every Teams meeting has its own chat, which lingers in the chat list long after the meeting ends. For a recurring project meeting, it is better to hold the meeting in the project channel, so the meeting notes, chat and recording all land in the same place as the rest of the work.

Structuring teams for a small business

Do not create a team for everything. For an office of ten to forty people, a handful of teams is usually plenty: one for the whole company with channels for announcements, general chat and social; one for each department that genuinely works separately, such as operations, sales and finance; and possibly one for major clients or projects that need their own files and guests. Each team should have at least two owners, so access can still be managed when one is away.

Inside each team, add channels for distinct streams of work rather than for each person or each week. A building company's projects team might have one channel per active job. A marketing team might have channels for website, social media and events. Archive channels when the work ends so the list stays readable.

Private and shared channels

Standard channels are open to everyone in the team. Private channels are visible only to selected members, which suits a management discussion within a broader team or a sensitive HR matter. Use them sparingly, because they create separate file locations that are easy to forget and can complicate permissions. Shared channels let you work with people in another team, or even another organisation using Teams, without adding them to the whole team. Before creating a private channel, ask whether the conversation would sit better in its own small team or a chat. Too many private channels make it hard to know where anything is.

Posting habits that keep channels readable

Start a new post for a new topic, and reply under the existing post when continuing a conversation. That keeps threads tidy and makes search useful. Use a clear first line, such as Smith Street fit-out - revised drawings uploaded, so people scanning the channel know what each post is about.

Mention people with an at sign when you need a response from them specifically, and mention the channel only for things everyone should read. Encourage people to save important files to the channel's Files tab rather than attaching them to posts, and to pin key documents as tabs at the top. A channel whose top tab is the current project plan saves everyone from asking where the latest version is.

Notifications and focus

Teams can overwhelm people with alerts. Teach staff to adjust notification settings per channel: turn on notifications for the channels they work in daily, and leave others to check when convenient. Set quiet hours on phones so evenings are not interrupted. Agree as a business which channel is for urgent matters, so people are comfortable muting the rest without fear of missing something important. Finally, write your channel and chat rules on one page and pin it in the company team. New starters will pick up whatever habits they see, so showing the intended approach on day one is easier than retraining later.