Microsoft Teams vs Slack for GitHub teams: which actually works for code reviews?

If you're choosing between Microsoft Teams and Slack for your engineering team's chat — and GitHub PR notifications are part of the decision — this side-by-side covers the real differences in 2026.

Targeting: microsoft teams vs slack github integration · Last updated 2026-05-02

Skip the manual setup

PullNotifier installs from Microsoft AppSource in 5 minutes — no YAML, no Power Automate flows.

TL;DR

Slack has a deeper, more mature developer-tool ecosystem and snappier real-time UX. Microsoft Teams wins on M365 integration, Entra ID enterprise SSO, and per-seat cost when you already pay for Microsoft 365. For GitHub PR notifications specifically, both platforms work great with PullNotifier — making the decision about chat preference, not GitHub tooling.

Notification UX comparison

Slack: message-based UX feels closer to email; threads work well for PR conversations; noise control via mute / DND is intuitive.
Microsoft Teams: channel-based UX with adaptive cards renders PR notifications richer by default, but threading is heavier and channel sprawl is real if you don't archive.

Channel and routing differences

Slack channels: ephemeral, lightweight, perfect for per-PR channels (Axolo) or throwaway routing.
Microsoft Teams channels: structured under Teams, heavier admin model, better for long-lived business units less for per-PR ephemerality.

App ecosystem maturity

Slack: deep developer-tool ecosystem (PullNotifier, Axolo, Toast.ninja, Linear, Notion, Vercel, etc.) with mature integrations.
Microsoft Teams: growing fast — but third-party developer-tool integration breadth is still smaller than Slack. The Office 365 Connectors retirement (March 31, 2026) reset some of the ecosystem.

Pricing

Slack: free for small teams; ~$7/user/month Pro; ~$12.50/user/month Business+.
Microsoft Teams: bundled with Microsoft 365 ($6+/user/month). Free standalone tier exists but is limited.

Use both? Here's how

Many engineering teams run both — Slack for engineering, Microsoft Teams for the rest of the company. PullNotifier supports both from the same dashboard with one subscription. Route GitHub events to either or both with the same channel routing rules.

For GitHub PR notifications specifically

Both Slack and Microsoft Teams have an official @github bot (free, basic). Both have purpose-built third-party tools — PullNotifier for both, Axolo for Slack with Microsoft Teams in private early access. For most engineering teams, the chat platform decision is decoupled from the GitHub notification quality.

Frequently asked

Is Microsoft Teams or Slack better for GitHub PR notifications?

Both work well with the right tooling. The decision usually comes down to chat platform preference, M365 bundling, and team size — not GitHub-specific capability.

Can I use the same GitHub PR notification tool for both Slack and Microsoft Teams?

Yes — PullNotifier supports both from the same account. Route any GitHub event to either or both with the same routing rules.

Did the Office 365 Connectors retirement affect Slack?

No. The Office 365 Connectors retirement only affected Microsoft Teams setups. Slack-based notifications were unaffected.

Which has the larger developer-tool app ecosystem?

Slack has the deeper third-party developer-tool ecosystem in 2026. Microsoft Teams is growing fast and has stronger M365 / Power Platform integration.