Slack vs Microsoft Teams vs Telegram for Work Chat
Basics4 minInnovialabs editorial team
In short
Telegram is free and familiar but gives the company no control over accounts and data; Slack is the best pure team chat with rich integrations; Teams wins when the company already runs on Microsoft 365.
The short answer
- Telegram — fine for a small team or for talking to clients: everyone already has it, it is free and fast. But accounts belong to employees, not the company, and there is little admin control.
- Slack — the most convenient team chat: channels, threads, strong search and a huge catalogue of integrations. Paid per user.
- Microsoft Teams — the logical choice if the company already uses Microsoft 365: Outlook, SharePoint, OneDrive and corporate accounts work together.
In CIS countries, including Uzbekistan, many teams start in Telegram simply because it is already on every phone. That is a valid start. The question is when to move.
Comparison
| Telegram | Slack | Microsoft Teams | |
|---|---|---|---|
| Structure | Chats, groups with topics, channels for broadcasting | Channels, threads, DMs, canvases | Teams with channels, chats, meetings |
| Search | Fast, within a chat or across chats, basic filters | Powerful, with filters by channel, person and date | Good, covers messages and files in Microsoft 365 |
| Integrations | Bots via Bot API — flexible but you build them yourself | Large app directory, Workflow Builder | Microsoft 365 apps, Power Automate, app store |
| Admin control | Group admins only; no central management of employee accounts | Central admin, SSO and data export on paid plans | Full Microsoft 365 admin: accounts, policies, retention |
| Security | Cloud chats encrypted between device and server; end-to-end only in secret chats | Encryption in transit and at rest, enterprise key management on top plans | Encryption, compliance tools, data retention and legal hold |
| Calls | Voice and video calls, group calls | Huddles, calls with screen sharing | Full meetings with scheduling, recording and calendar |
| Cost | Free; Premium is optional and personal | Free tier with limits, paid per user | Often part of Microsoft 365 plans; availability and bundling vary by region |
| Familiarity in CIS | Very high, nobody needs onboarding | Common in IT companies and teams with foreign clients | Common in corporations, banks and companies on Microsoft infrastructure |
Check current plans and limits on the official sites: they change regularly.
Where each one fits
Telegram works well when:
- the team is small and everyone knows each other;
- most communication is with clients, couriers or partners who already use Telegram;
- you need quick notifications from a bot — new orders, leads, payments.
Slack fits when:
- the team has several departments and parallel projects;
- you work with many tools — Jira, GitHub, Google Drive — and want their events in one place;
- written communication and searchable history matter more than calls.
Teams fits when:
- the company already pays for Microsoft 365 and uses Outlook and SharePoint;
- meetings and documents are central to the work;
- IT and security require centralised accounts, policies and audit.
When a messenger stops being enough
Telegram groups are a fine start. Watch for these signals:
- Decisions get lost. Nobody can find what was agreed a month ago in a long chain of messages.
- A departing employee leaves with the data. You can remove them from groups, but the account is personal and whatever was saved or forwarded stays with them.
- Personal and work mix up. Work messages drown between family chats, and people answer at night.
- New people cannot catch up. There is no structure to read through, only an endless feed.
- You need audit, retention or access control — for clients, regulators or internal security.
- There are too many groups and nobody knows which one is current.
If several of these sound familiar, move internal work to Slack or Teams. Telegram can remain for clients and for bot notifications.
How to switch without chaos
- Pick one tool and set a date; parallel chats for months kill adoption.
- Create the channel structure in advance: team, projects, help, announcements.
- Write five to ten etiquette rules and pin them.
- Move one team first, fix the friction, then the rest.
- Connect the main integrations on day one so the new chat is useful immediately.
FAQ
For non-sensitive coordination, yes, with discipline: groups owned by company admins, two-step verification enabled on accounts, and no confidential documents in chats. For sensitive data, a tool with central account management is safer.