Integration · 2026
Connect Slack to Microsoft Teams
Automatically sync data from Slack into Microsoft Teams. Ikaroa designs, builds and maintains a reliable Slack → Microsoft Teams integration so your tools stay in perfect sync.
TL;DR
Connecting Slack to Microsoft Teams lets you automatically move messages, channels and conversations from Slack into Microsoft Teams, so your team stops copying data by hand. Slack is team messaging and collaboration; Microsoft Teams is chat, meetings and collaboration from Microsoft. The integration can be built with a native connector, a tool like Zapier or Make, or a custom API integration for full control. Ikaroa builds and maintains the connection for you.
How do you connect Slack to Microsoft Teams?
You can connect Slack to Microsoft Teams in three ways: a native integration if one exists, a no-code automation platform such as Zapier or Make, or a custom API integration built directly against the Slack and Microsoft Teams APIs. The right choice depends on data volume, how real-time the sync needs to be, and how much custom logic you require. For business-critical or high-volume syncs, a custom API integration is the most reliable. Ikaroa designs, builds and maintains Slack → Microsoft Teams integrations end to end.
Teams that rely on both Slack and Microsoft Teams usually hit the same wall: the two tools don't talk to each other. Slack handles team and customer communication in real time, while Microsoft Teams is used for team and customer communication in real time. Without an integration, someone ends up exporting spreadsheets, re-keying records and reconciling mismatches by hand, which is slow, error-prone and doesn't scale. A proper Slack to Microsoft Teams integration removes that friction by keeping data flowing automatically from one system to the other.
Why integrate Slack with Microsoft Teams?
Stop manual data entry
Every time a new message is posted in Slack, the relevant data is pushed straight into Microsoft Teams. No exports, no copy-paste, no stale records.
One source of truth
Keep messages, channels and conversations consistent across Slack and Microsoft Teams so every team is working from the same numbers.
Faster, automated workflows
Trigger actions in Microsoft Teams, like post a message and send a direct message, the moment a new message is posted in Slack, with no human in the loop.
Fewer costly errors
Automated syncing eliminates the typos, missed records and duplicates that come with moving messages and channels between systems by hand.
What data syncs from Slack to Microsoft Teams?
| Data | What happens |
|---|---|
| Messages | When messages are created or updated in Slack, they are synced into Microsoft Teams so your messaging platform stays current. |
| Channels | When channels are created or updated in Slack, they are synced into Microsoft Teams so your messaging platform stays current. |
| Conversations | When conversations are created or updated in Slack, they are synced into Microsoft Teams so your messaging platform stays current. |
| Notifications | When notifications are created or updated in Slack, they are synced into Microsoft Teams so your messaging platform stays current. |
Popular Slack to Microsoft Teams automations
- →When a new message is posted in Slack, automatically post a message in Microsoft Teams.
- →Keep messages and channels in Slack and Microsoft Teams in sync in both directions.
- →When a keyword is mentioned in Slack, send a direct message in Microsoft Teams and notify the team.
- →Enrich Microsoft Teams records with messages and channels pulled from Slack on a schedule.
Ways to connect Slack and Microsoft Teams
Native integration
If Slack and Microsoft Teams offer an official connector, this is the quickest path. It covers common fields out of the box, but native connectors are often limited in which messages and channels they sync and how much you can customise the mapping.
Best for: simple, standard use cases with low data volume
No-code automation (Zapier / Make)
Tools like Zapier and Make connect Slack and Microsoft Teams with visual workflows. Great for getting started fast and for moderate volumes, though per-task pricing and rate limits can add up, and complex logic gets hard to maintain.
Best for: moderate volume and quick wins without engineering
Custom API integration
A bespoke integration built directly against the Slack and Microsoft Teams APIs gives you full control: exact field mapping, custom business logic, real-time webhooks, error handling and retries. This is what Ikaroa builds for business-critical syncs that need to be reliable at scale.
Best for: high volume, real-time, business-critical syncs and custom logic
How Ikaroa builds your Slack → Microsoft Teams integration
- 1
Map the data and the goal
We start by defining exactly which messages, channels and conversations need to move from Slack to Microsoft Teams, in which direction, how often, and what should happen on edge cases like duplicates or failures.
- 2
Choose the right method
Based on your volume, real-time needs and budget, we recommend native, no-code or a custom API integration between Slack and Microsoft Teams, and explain the trade-offs in plain language.
- 3
Build and connect securely
We authenticate against Slack and Microsoft Teams using OAuth or API keys, build the field mapping and transformation logic, and set up webhooks or scheduled syncs so data flows automatically.
- 4
Test, monitor and maintain
We test against real messages and channels, add logging, alerting and automatic retries, then monitor the Slack → Microsoft Teams integration so it keeps working as both platforms evolve.
Get your Slack to Microsoft Teams integration built
Tell us what you need to sync between Slack and Microsoft Teams. We scope it, then reply within one working day with a fixed quote. No obligation.
Slack to Microsoft Teams integration FAQ
How do I connect Slack to Microsoft Teams?
There are three main ways to connect Slack to Microsoft Teams: a native integration (if available), a no-code automation tool like Zapier or Make, or a custom API integration built against the Slack and Microsoft Teams APIs. For occasional, simple syncs a no-code tool is fine; for reliable, high-volume or real-time syncing of messages and channels, a custom integration is best. Ikaroa can build and manage it for you.
Can I sync Slack and Microsoft Teams in real time?
Yes. Using webhooks from Slack, changes can be pushed to Microsoft Teams within seconds instead of waiting for a scheduled batch. Real-time syncing is best handled with a custom API integration, which Ikaroa builds with proper retries and error handling so nothing is lost.
What data can I sync between Slack and Microsoft Teams?
Commonly synced data includes messages, channels, conversations and notifications. The exact fields depend on your setup. Ikaroa maps your Slack data to the right objects in Microsoft Teams and handles any transformations needed in between.
Do I need Zapier to integrate Slack with Microsoft Teams?
No. Zapier or Make are convenient for simple automations, but they are not required. A direct, custom Slack to Microsoft Teams API integration avoids per-task fees and rate limits, and gives you more control over reliability and logic. Ikaroa builds both no-code and custom integrations depending on what fits your needs.
How much does a Slack to Microsoft Teams integration cost?
It depends on complexity: a simple one-way sync of messages and channels is far cheaper than a real-time, two-way integration with custom logic. Ikaroa scopes the work up front and gives you a fixed quote. Get in touch for a tailored estimate for your Slack → Microsoft Teams integration.
Is the Slack Microsoft Teams integration secure?
Yes. We connect to Slack and Microsoft Teams using their official APIs with OAuth or scoped API keys, never store credentials in plaintext, and follow least-privilege access. All data in transit is encrypted, and we can host the integration in your own cloud if required.
Related integrations
Reverse direction
Microsoft Teams to Slack →More Slack integrations