I’ve been down this road more than once. You start a new job or launch a new project, and someone asks the question: “So, are we using Slack or Teams?” And suddenly you’re in the middle of what feels like a philosophical debate about workplace communication.
Here’s the thing — both Slack and Microsoft Teams have come a long way. But they’re not interchangeable, and the wrong choice can actually slow your team down. Let me walk you through what actually matters in 2026.
The Big Picture: Different Philosophies
Slack was built as a chat platform first. Everything else — calls, files, integrations — came later, layered on top of a messaging foundation. Microsoft Teams started as a response to Slack but lives inside the Microsoft ecosystem, which changes the calculus significantly.
If your team already lives in Google Docs and Gmail, Slack probably feels more natural. If you’re deep in Microsoft 365 — Outlook, SharePoint, the whole suite — Teams integrates in ways that can actually save you time.
Pricing: What You’re Actually Paying
Let’s get real about costs, because this matters for small businesses.
Photo by Christina Morillo on Pexels
Slack’s pricing is straightforward. The free tier gives you 90 days of message history and 10 integrations, which is decent for very small teams. The paid plans start at around $8.75 per user/month for Pro, which adds unlimited message history, group video calls, and more integrations. Business+ runs about $15 per user and adds guest access and admin tools.
Microsoft Teams is trickier. If you already have Microsoft 365 Business Basic ($12.50/user/month), you get Teams included. That’s a solid deal. But if you need the full Microsoft stack, you’re looking at Business Standard ($22/user/month) or higher. Teams itself is “free” as part of Microsoft 365, but you need the license to use it properly.
For a small business already using Microsoft 365, Teams is essentially free. For everyone else, Slack might actually be cheaper unless you need the Microsoft integrations.
Channels and Chat: How Conversations Work
This is where the tools feel most different.
Slack channels are clean and intuitive. Public channels, private channels, threaded replies — it all works the way you’d expect. I particularly like how Slack handles threads; they stay organized without feeling cluttered. The channel architecture is simple: you create a channel, add people, and start talking.
Teams channels are more complex. Each channel lives inside a team, and you can add tabs at the top for files, apps, and other resources. It feels more structured, which some teams love and others find overkill. The conversation threading in Teams works, but it can get messy when threads get long.
One thing Teams does better: the ability to have meetings directly in a channel with a dedicated tab. If your team has lots of quick video check-ins, this integration is genuinely convenient.
Video Calls: Which One Actually Works
Both platforms offer video calling, but there’s a clear winner here.
Slack’s Huddles are lightweight. They work fine for quick calls — screen sharing, audio, simple. But they’re clearly positioned as a supplement to chat, not a replacement for dedicated video software. You can start a huddle with one click, which is great for impromptu conversations.
Microsoft Teams takes video more seriously. The meeting quality is solid, especially if your team uses the scheduling features. You can record meetings, use breakout rooms, and integrate directly with Outlook for calendar scheduling. If your team has regular meetings that need recording or follow-up, Teams has the edge.
For small businesses that just need quick calls, Slack huddles might be enough. For teams that need structured meetings with recording and follow-up, Teams wins.
Integrations: Where Slack Pulls Ahead
This is the area where Slack genuinely shines.
Slack’s integration marketplace is massive. Almost every tool your team uses — Asana, Trello, Salesforce, GitHub, Zapier, you name it — has a Slack integration that actually works. Setting up a notification from your CRM or project management tool into a Slack channel takes minutes.
The automation capabilities have also improved. You can build workflows directly in Slack without code, connecting different apps and creating custom notifications. It’s not as powerful as dedicated automation tools, but it’s enough for most small business needs.
Microsoft Teams integrations are more limited. They work beautifully with Microsoft products — of course — but third-party integrations can feel like an afterthought. If your tech stack is heavily Microsoft-based, this won’t matter. If you use a mix of tools from different vendors, you’ll find more options in Slack.
Search and File Sharing
Slack’s search is solid. You can search messages, files, and even code snippets. The search syntax is powerful once you learn it. Files shared in Slack are easy to find later, and the preview functionality works well for common file types.
Teams search has improved but still feels clunkier. Microsoft has pushed people toward using SharePoint for file management, which makes sense from an enterprise perspective but adds friction for small teams. If your team is used to just dropping files in chat, Teams can feel like it requires more structure.
That said, if your team needs tight integration between chat and document collaboration — version control, co-authoring, SharePoint permissions — Teams has an advantage that Slack can’t match.
Ease of Use: The Learning Curve
Here’s where small teams should pay attention.
Slack is easier to get started with. You sign up, create a workspace, and within minutes everyone is chatting. The interface is intuitive, and new team members typically figure it out without training. There’s no setup required beyond creating accounts.
Teams has a steeper learning curve. It’s not that it’s bad — it’s that it does more, which means more to learn. The interface is more complex, and you’ll likely need to spend some time configuring channels, tabs, and permissions. For teams already comfortable with Microsoft products, this is fine. For teams that want to just start talking, Slack is simpler.
My Honest Verdict
Here’s where I’d steer you:
Choose Slack if:
- Your team is small (under 20 people)
- You use a mix of tools from different vendors
- You value simplicity and quick onboarding
- Your budget is tight and you need the free tier
Choose Microsoft Teams if:
- Your team already uses Microsoft 365
- You need enterprise-grade meeting features
- Your organization requires tight document collaboration
- You have IT resources to manage the setup
For most small businesses I work with, Slack is the better default choice — especially if you’re not already invested in Microsoft. The integrations are better, the learning curve is lower, and the pricing is clearer.
But if you’re already paying for Microsoft 365 Business, you’d be crazy not to use Teams. The cost of the license is already sunk, and the integration with Outlook and SharePoint can actually streamline your workflow.
The “right” choice depends on where you are. Neither is wrong. Just make sure you’re not choosing based on familiarity alone — pick the tool that fits your actual needs.
Frequently Asked Questions
Can I use both Slack and Teams in the same organization?
Yes, but I’d caution against it. Using both creates confusion about where to communicate. Pick one and stick with it, unless you have specific use cases that require both (like using Slack for informal chat and Teams for formal meetings).
Which platform has better customer support?
Slack generally has more responsive support for smaller teams. Microsoft support varies depending on your license level. Both have extensive help documentation.
Can I migrate my Slack data to Teams or vice versa?
Yes, Microsoft provides migration tools for moving from Slack to Teams. Moving the other direction is harder. If you’re considering switching, plan for some setup time.
Do I need to train my team on either platform?
Slack requires minimal training. Teams benefits from a short onboarding session, especially for features like channel tabs and meeting scheduling. Both have free resources on their websites.
Which one is better for remote teams specifically?
Both work well for remote teams. Slack feels slightly more “native” to remote-first communication, while Teams integrates meeting features more seamlessly. For purely remote small businesses, I’d lean toward Slack for simplicity, but Teams is a perfectly valid choice.