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Slack And Teams

When Slack came onto the scene in late 2013 it had the marketplace to itself. However, in 2017, Microsoft made a move to challenge Slack's market dominance when they released their own chat communication software: Microsoft Teams. Slack may have been the first tool to facilitate file sharing and team chat within organizations, but even as it has deepened its toolbox, so has MS Teams.

  • Slack charges for the SaaS subscription plans that are most comparable to Microsoft Teams. Teams is a better solution for larger enterprises as it enables more users than Slack. Slack is a solid solution for smaller businesses needing to incorporate many external guest participants for free or businesses or want more third-party app choices.
  • Both Slack and Microsoft Teams are designed for businesses across a huge range of industries. The question of who they're best for really comes down to the daily functions of your team.
  • 2 days ago  Slack is a multi-platform cloud-based team messaging application and platform. It is capable of real-time messaging, voice and video conferencing, archiving, and search functionality. Users can send one-on-one direct messages, create private group chat and persistent open chat rooms, organize chats by topic, attached files to messages, and integrate with a variety of online third-party.

Slack was the self-proclaimed front runner until Microsoft Teams came around a couple years ago, but when it comes down to it, Slack is a communications tool, and Teams is a total collaboration tool—including communications. Link Officevibe Teams with Slack Channels (optional) If you create teams in Officevibe, you can then map them to your existing Slack channels so new employees can automatically be added to the appropriate Officevibe teams and if an employee is removed in Slack, they will then be removed from the Officevibe team.

Which should you choose? To answer that, ask yourself: What tools and services do you need? And what platforms are you already using? Take a look at the overlap between Slack and MS Teams to see where each software shines and determine which is the right call for your workplace.

Chat Rooms

One of Slack's true innovations was the advent of channels organized around a specific topic.

Both MS Teams and Slack rely heavily on these chat rooms. Mastering Slack notifications is easy and MS Teams also allows allow notifications so you know right away if someone mentions you by name in a thread. MS Teams Both tools also allow direct messages, so you can chat with individual co-workers and send them files (or memes, if you prefer).

Slack and MS Teams also both let you create conversation threads within a single chatroom. No more confusion when you're scrolling through a comment thread trying to figure out who's responding to whom. Slack takes this feature one step further, by letting you transfer conversation threads to private conversations as well. In addition, Slack lets you add themes to your user interface so that you can see clearly what each chat is about.


Both MS Teams and Slack allows searching through all chat sessions, putting an end to the nightmare of trying to find one comment among thousands. If you've opted for the free version of Slack, however, the search function only applies to the 10,000 most recent messages.

Microsoft's WhoBot tool helps with search in MS Teams. This search bot crawls your entire company intranet to surface the data you're looking for. It also helps you access subject matter experts within your organization so you can find the best person for what you're looking for.

Content Sharing

When Slack was initially released, the ability to share content with collaborators was a big deal. Now, though, MS Teams has just about caught up. Which tool works best for your organization depends on which platform you already use for file sharing.

If you're committed to the Office 365 package, you'll want to lean in on MS Teams, which lets you view and collaborate on files from within the tool without leaving the platform. With Slack, you'd have to go through the extra steps of downloading the file, editing or commenting on it off-platform, then returning the file to Slack. If you use Google Drive extensively in your office, however, Slack is likely to be a stronger choice.

App Integrations

Slack holds an edge over MS Teams in terms of the sheer numbers of apps that integrate with the software, with more than 800 third-party apps working well with the platform. Among the most commonly used integrations are Google Drive, Zendesk, Dropbox, GitHub, and Trello.

MS Teams, on the other hand, integrates with fewer than 200 external apps. However, among those are the Office 365 apps, including Skype and Outlook. If you use these tools, being able to email and call your team members from within MS Teams may be a huge advantage.

In addition, MS Teams has streamlined features to make third-party app integration more intuitive. When MS Teams was originally introduced, users had to screenshot content and upload it manually into MS Teams — a cumbersome process. Now, you can integrate apps directly from the Teams store or as a quick attachment. MS Teams also uses a tab-based interface to deepen the functions you can access on third-party apps. Adding custom tabs is easy, so you can personalize the version of MS Teams you see on your screen in a way that works best for you and your team members.

Making the Choice: Slack or Microsoft Teams

Your choice between Slack and MS Teams largely depends on the collaboration platform you're already using. If you already pay for an Office 365 business subscription, you have access to MS Teams as part of the package, so why pay extra for Slack? On the other hand, if Google Drive is your go-to for storage and file sharing, you'll find smoother integration using Slack.

The Breakdown

SlackMicrosoft Teams

$6.67 user/month (billed annually)


$12.50 user/month (billed annually)

FreemiumOffice 365 Business Essentials

$5 per user/month (billed annually)

Office 365 Business Premium

$12.50 per user/month (billed annually)

30-day free trial available for both plans

  • Chat notifications
  • Direct messaging
  • Conversation threads
  • Chat search
  • Transfer conversation threads to private conversations
  • Add themes to chat rooms
  • Integrations with 800+ third-party apps
  • Chat notifications
  • Direct messaging
  • Conversation threads
  • Chat search (via WhoBot)
  • WhoBot searches your company intranet
  • WhoBot connects you to subject matter experts in your company
  • Can collaborate without leaving the program (if you use MS Office)
  • Easy to personalize and add tabs
Message history limit10K messages in Free plan, unlimited in Standard and Plus plansUnlimited in all plans
IntegrationsIntegrates with 800+ third-party apps on paid plans.

10 integration limit in Free plan.

180+ apps and services
Audio/video callsUnlimited one on one voice and video calls in Free plan Conference calls for up to 15 participants in Paid plansVoice and video calls available for up to 80 people per meeting.
File storageFree plan: 5GB file storage for a team

Standard plan: 10GB per user

Plus plan: 20GB per user

Free plan: 2 GB/user and 10GB of shared storage

Paid plans: 1 TB per organization

Screen sharingUnavailable in Free version, available in Standard and Plus versions Available in all plans

Whether you end up with Slack or MS Teams, you can enhance your productivity further by adding Shiftto your workflow toolbox. With Shift, you can focus on the work you need to deliver without wasting time searching for data and files, streamlining your entire workflow as a result.

Ultimate Guide to External Federation in Slack, Microsoft Teams, & Webex

Everything you need to know about external federation between your combination of Slack, Microsoft Teams, and Cisco Webex.

This page will act as your library. All resources for federation between Slack and Microsoft Teams, Slack and Webex, and Microsoft Teams and Webex are contained on this page.

Each section below also branches off to its own page dedicated to a specific element of external federation.

We’ve designed this page to be an educational experience for those interested in better connecting their external communications experience.

Slack And Teams Connector

Alternatively, if you’re already clued up on external federation and are just looking to sign up, you can install directly to the app of your choice.

Table of Contents

An Introduction to External Federation

External federation is the process or technology required for team collaboration apps to communicate with each other across domain.

This, translated into team collaboration speak, means that users within multiple organizations, i.e. a supplier <> customer relationship, become a single group that can collaborate together.

The origins of external federation stem from the Microsoft world.

In the old days, we used Lync and Skype for Business federation to connect to other businesses that also used Skype for Business.

As a Skype for Business admin or user, you may recall adding contacts from other organizations like this…

In the modern-day of team collaborations tools like Slack, Microsoft Teams, and Webex, federation exists in the following options:

  • Slack shared channels (or Slack Connect for up to 20 organizations)
  • Microsoft Teams Connect (available later in 2021)
  • Cisco Webex external accounts

Federation exists for the use case of external parties collaborating via the same team collaboration app, like Slack to Slack.

However, in 2021, there is no native functionality for cross-platform and cross-domain chat.


So teams and external contacts wishing to communicate without switching from one app to another are at a loss.

Some teams don’t know any other way. Others are fed up with the productivity and momentum losses each time they have to move to another app to cater for a different partner or contractor’s app requirements.

But, it’s not all doom and gloom! Mio is doing something about it.

5 Expectations vs 5 Realities

When you chat with external parties (suppliers, partners, customers etc), you likely have the expectation that technology is on your side.

And it is.

As long as that external contact uses the same technology.

Let’s say you live in Slack. Everyone in your company uses Slack and you’ve got a bunch of integrations installed to improve efficiencies throughout your digital work.

Your working day is working at optimum productivity.


You need to provide feedback to a contactor. Or you’ve been putting off replying to clients because your inbox is a mess.

Or you can no longer put off that impending notification that’s been there for hours on Microsoft Teams. You only use Teams for one client, so you know who it is. But, you also know that if you move to Teams, you’ll get consumed in that client so you should probably close Slack.

Or how about you call them, interrupt their day, leave a voicemail that they won’t check then follow up by email again?

External communications can be a chore. Make sure you get your expectations and realities in check.

Where Will External Federation Be 1 Year From Now?

Open slack teams

If I was going to look into my optimistic crystal ball, my answer to this would be everybody uses Mio for external federation; team collaboration chaos is no more.

The reality is that there are a few techy and business intricacies along the way. So, it’s important to understand how we got the state of external communications we find ourselves in today before we predict the future.

In this section, we cover some stats that we uncovered when conducting research for our Workplace Messaging Report. By looking at the state of internal communications, we can make good estimates about the state of external communications.

Transfer slack to teams

Stats include:

  • 91% of businesses use at least 2 messaging apps
  • 66% of companies using Microsoft Teams say they are also Slack customers
  • 3.3 is the average number of workplace chat apps used by each respondent

Also covered in this section are uses cases driving the acceleration of federation for apps like Slack and Microsoft Teams.

You might be the VP of Business Development and chat with partners all day every day.

Instead of keeping documents in one app and messaging with your favorite shortcuts and integrations, you spend hours every week learning how the partner works in order to protect the relationship.

With external federation, you could be building better relationships, making faster decisions, and keeping communications in one place

Finally, I reach out to industry experts, Dom Black at Cavell Group and Irwin Lazar at Nemertes Research, for their prediction for where external federation will be in 1 year.

7 Problems And How You Can Fix Them

The problems with external federation between apps like Slack, Microsoft Teams, and Webex have only accelerated the customer demand to find a solution.

It’s important to know why external federation isn’t a standard feature on the Slack pricelist, a plugin for Webex, or downloadable from the Teams app store.

In this section, I asked business leaders that manage multiple apps without external federation what their biggest problems were.

Slack And Teams Connector

I also reached out to some familiar faces from the team collaboration industry for their take on what has been holding back federation among external contacts.

From complete collaboration overwhelm to no native interoperability between messaging platforms, we’ve compiled the biggest blockers to joining up the collaboration experience with external contacts.

Avepoint Slack To Teams Migration


Sign Up for External Federation

Slack And Teams

As I said at the top of this post, you may already be clued up about external federation.

If you weren’t, hopefully, the posts included in each of the sections above have provided you with everything you need.

If that is the case, great!

Mio provides external federation for Slack, Microsoft Teams, and Cisco Webex.

A little like our tool for connecting teams internally, you can federate your platform choice with the choice of your external contacts.

If you need to message cross-platform to collaborate with external contacts like contractors, partners, or customers, install Mio here and start chatting to external contacts from the platform of your choice.

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