What is the difference between Microsoft Teams and Slack Connect?

Microsoft Teams is best for Organizations already using Microsoft 365, while Slack Connect is best for Organizations needing secure inter-company messaging. Microsoft Teams starts at $4/user/mo and Slack Connect starts at $7.25/user/mo.

Is Microsoft Teams or Slack Connect cheaper?

Microsoft Teams starts at $4/user/mo with a free tier. Slack Connect starts at $7.25/user/mo.

Is there a free alternative to Slack Connect?

Yes, Microsoft Teams offers a free tier (Free basic chat and video meetings).

Microsoft Teams vs Slack Connect

Microsoft Teams is all-in-one communication platform with chat, video meetings, and Office 365 integration, while Slack Connect is slack feature for connecting channels between different organizations securely. Microsoft Teams comes in cheaper, but price alone does not tell the full story. Microsoft Teams is built for organizations already using microsoft 365, whereas Slack Connect targets organizations needing secure inter-company messaging.

At a glance

	Microsoft Teams	Slack Connect
Best for	Organizations already using Microsoft 365	Organizations needing secure inter-company messaging
Starting price	$4/user/mo	$7.25/user/mo
Free tier	✓	—
Open source	—	—
Free tier available	✓	—
Open source	—	—
Channels	✓	—
Cross-Org Channels	—	✓
DMs	—	✓
File Sharing	✓	—
Office 365 Integration	✓	—
Security	—	✓
Video Meetings	✓	—
Webinars	✓	—
Workflows	—	✓

Microsoft Teams

Strengths

Included with Microsoft 365 subscriptions
Deep integration with Office apps (Word, Excel, SharePoint)
Strong video conferencing with large meeting support
Enterprise-grade security and compliance

Weaknesses

Interface can feel cluttered and confusing
Heavy on system resources
Navigation between chats, teams, and channels is unintuitive
Notifications management is frustrating

Try Microsoft Teams → Full review

Slack Connect

Strengths

Cross-organization channels let you collaborate with external partners in shared spaces
Includes Security as a core feature, purpose-built for team communication workflows
Affordable at $7.25/user/mo — one of the lower-priced options in the team communication category
Includes dms alongside the core feature set — fewer separate tools needed

Weaknesses

No free plan — you need to pay $7.25/user/mo from day one to use it
Fewer built-in features means you may need additional tools to cover gaps
Notification overload is a real problem as the number of channels grows
Relatively new (founded 2020) — the feature set and integrations are still maturing

Try Slack Connect → Full review

The bottom line

Pricing: Microsoft Teams starts at $4/user/mo. Slack Connect starts at $7.25/user/mo. Microsoft Teams is the more affordable option.

Feature gaps: Microsoft Teams offers Channels, File Sharing and Office 365 Integration that Slack Connect lacks. Slack Connect brings Cross-Org Channels, DMs and Security that Microsoft Teams does not have.

Team fit: Microsoft Teams is geared toward enterprise teams, while Slack Connect is aimed at mid-size teams teams. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.

Where each tool shines: Microsoft Teams's biggest strengths are: included with microsoft 365 subscriptions. deep integration with office apps (word, excel, sharepoint). Slack Connect's biggest strengths are: cross-organization channels let you collaborate with external partners in shared spaces. includes security as a core feature, purpose-built for team communication workflows.

Watch out for: With Microsoft Teams, users commonly note that interface can feel cluttered and confusing. With Slack Connect, the main complaint is that no free plan — you need to pay $7.25/user/mo from day one to use it.

Choose Microsoft Teams if...

Your profile matches its sweet spot: organizations already using microsoft 365
You want to save on per-user costs — Microsoft Teams is $3.25/user/mo cheaper
You specifically need Channels and File Sharing
You care about deep integration with office apps (word, excel, sharepoint)
Your team size fits the enterprise profile Microsoft Teams is designed for

Choose Slack Connect if...

Your profile matches its sweet spot: organizations needing secure inter-company messaging
You specifically need Cross-Org Channels and DMs
You care about includes security as a core feature, purpose-built for team communication workflows
Your team size fits the mid-size teams profile Slack Connect is designed for