Request Information

Request Information

or Call 1.877.459.4347

Microsoft Teams vs Slack – In-Depth Side By Side Comparison

October 20, 2020 / Evolve IP

Are you comparing Microsoft Teams vs Slack? To help make your decision about the suitability for your company, see our high-level overview comparing Microsoft Teams vs Slack collaboration solutions. Then read further to find out how Slack is different than Teams in a detailed Slack vs Teams comparison.

Both Microsoft Teams and Slack are collaboration platforms with free and paid versions and incorporate similar productivity features. This comparison focuses on the paid versions which are more suited for mid-sized and enterprise businesses.

Microsoft Teams vs Slack – Comparison Findings

  • Microsoft Teams is the most logical choice for organizations whose employees are already using Microsoft solutions such as Microsoft 365 (formerly Office 365 / O365) or one-off Microsoft services such as Word, PowerPoint, Excel, or SharePoint / OneDrive.
  • Microsoft users don’t need to pay more for a Teams subscription if they already have a Microsoft 365 SaaS subscription plan or use Microsoft Dynamics ERP.
  • 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.
  • Slack is a good choice for businesses that aren’t concerned with directly integrating Microsoft solutions
  • Both Microsoft Teams and Slack provide excellent security, particularly in their enterprise versions.

Microsoft Teams Features and Benefits

Microsoft includes Teams in many of its subscription plans at no extra cost, including Microsoft 365 Business Essentials, Business Standard, and enterprise versions known as E1, E3, and E5. Microsoft Dynamics 365 can also be integrated with Teams through either the Basic or Enhanced Collaboration Experience. That means Microsoft Teams is easy to access at no additional cost except the upgrades that you need and want.

The Microsoft Teams collaboration platform natively includes:

  • Teams
  • Channels
  • Video and audio meetings and live events, with screen sharing
  • Chat messaging, including inline message translation
  • Calls
  • Files, including file-sharing and attachments to messages
  • Notifications
  • Bots for messaging and productivity
  • Workflow automation for productivity, project management, and exceptions notification without coding
  • Integrated Microsoft software and a choice of 600+ available third-party apps,
  • Help resources

The Evolve IP Microsoft Teams with Cisco voice platform is enhanced with major features like:

  • Cisco enterprise voice and communications services for phone systems
  • SMS business messaging / testing
  • AI voice recording and speech analytics
  • A Gartner Magic Quadrant noted omnichannel contact center
  • Much more

Microsoft Teams vs Slack

In-depth comparative analysis on video conferencing, collaboration solution providers.

Microsoft Teams – A Deeper Dive

Teams are the people who work on projects within the organization or as guests from outside the organization.

Channels have message threads for particular projects or functional areas. Chat organizes conversations like a chat with messages that can include file attachments to share with others and the history of conversations related to the channel topic over time.

All team members in the channel can receive the communications for collaboration and editing, given their permission level for a particular file or electronic document. Files are available from seamlessly integrated Microsoft 365 software like Word, Excel, PowerPoint, and OneNote.

Microsoft just announced some major enhancements at Ignite 2020 that give it a major competitive edge for businesses including:

  • Breakout rooms
  • Presentation modes with custom layouts
  • More together mode backgrounds
  • Meeting recaps
  • Teams Webinar registration links

In the current Microsoft Teams Together Mode gallery view in video meetings joins remote video frames to make it look like attendees are in the same room. Remote and in-house teams, including sales teams, appear as part of a unified company. Students in a distance learning setting seem to be seated in a classroom to interact.

The MS Teams solution organizes work activities and provides tools to accomplish work. Features include streamlining and automating workflows with pre-planned messaging, managing project or work status with periodic inquiries requesting answers, and providing notifications when certain events occur.

Slack Features and Benefits

Slack lists and compares the features included in each pricing plan. This analysis focuses on the Plus plan which is a closer comparison to Microsoft Teams.

Slack offers teams, workspaces, channels, and Slackbot. Slack encourages large organizations to use numerous channels that include team channels, project channels, team sub-channels, and topic channels, with naming conventions.

Screen-sharing is available in all Slack paid plans, including Plus (but not in the free version).

The Slack Connect feature enables unlimited invited guests from external organizations to collaborate securely with employees using Slack.

Comparing Features and Benefits of Microsoft Teams vs Slack (The shortlist)

Feature Microsoft Teams Slack
Creating teams Yes Yes. Set up a workspace for teams in Slack.
Channels Yes Yes
Chat messaging with threads Yes Yes
Video meetings Yes Yes
Audio Yes Yes
Direct Routing PSTN Calls Yes Unknown
File-sharing, including message attachments Yes. Seamlessly integrated with Microsoft 365 Yes. 3rd party required to integrate with Microsoft applications (See below)
Limits Microsoft Teams limits: Per-user number of teams to create 250

Per-user membership on teams 1,000

Number of members per team 25,000

Number of teams a Microsoft 365 or Office 365 organization can have 500,000

Number of members in an org-wide team 5,000

Number of channels per team

200 (including deleted)

Number of Private channels per team 30

Number of members in a Private channel 250

Meeting & chat participants

300 (effective June 2020)

Chat messages and search – unlimited

Slack limits in Plus:

Number of channels- unlimited

Voice and video calls – up to 15 participants

External collaboration – unlimited

Workspaces – 1

Integrations with other apps – unlimited

Message history – unlimited

File storage – 20GB per team member



Bots for expert search, productivity, automated messaging and reminders, and project management



Multiple bots with different functions are available from Microsoft and 3rd parties through the Apps tab in Teams. The Microsoft Flow app in Teams is used as a chatbot for messaging, for approvals, and to automate and streamline workflows. The Microsoft Who app (a bot) is used to search for expertise within your organization. (Upgrades to Microsoft Power Virtual Agents and Microsoft Power Automate can also be used to create bots and use robotic process automation (RPA) with Teams.) SlackBot is available for all members and guests on all Slack plans, including free, in direct messages and channels, or to use yourself. Choose other third-party bots in Slack. Slack users can access templates for Microsoft Flow.
Collaboration with trusted external organizations Microsoft Teams doesn’t have a limit on outside guests, but more than 5 guests per user will cost more. The number of Microsoft Teams guests from outside organizations is up to 5 guests per licensed user included in Azure Directory (AD) license provided by certain Microsoft 365 and Office 365 software products, with upgrades for additional guest users through the purchase of a higher level Azure AD B2B collaboration license. Yes, with Slack Connect, using public or private shared channels. The current limit is 19 outside organizations.
Zoom third-party app integration Yes Yes
Office 365 (Microsoft 365) software and apps Integrated into Teams for use without leaving the collaboration platform. Microsoft products for Slack include: the Microsoft Teams Calls app, Outlook e-mail add-in, Outlook calendar app for Slack, OneDrive app (for sharing cloud-based OneDrive and SharePoint files in Slack), Azure Active Directory, Azure Boards, Azure Pipelines, and Azure Repos, and Slack templates for Microsoft Flow (templates can connect Slack to Office 365, email, SharePoint, etc.). The Microsoft Teams Calls app lets users start Microsoft Teams calls from within a Slack workspace. With the Microsoft Teams app, Slack users can “choose to set Microsoft Teams Calls as a default calling app so members can initiate Teams Calls from the phone icon in a channel or direct message (DM).”
Industry versions or features Healthcare, Firstline workers (retail, healthcare workers, etc.), and Education Financial Services and Healthcare and supports Distance learning for Education
Custom backgrounds and blurring images Both No. Offers light and dark modes.
Whiteboard Yes, Microsoft Whiteboard is integrated with Teams. A toggle on/off setting applies to all Whiteboard applications (not just Teams) No, but the choice of several third-party app integrations, including SketchTogether
Security High, including enterprise-level security and compliance


High, including enterprise-level security and compliance requirements.

Conclusion – Best User Fit and Suitability

Is Teams better than Slack? Or is Slack better than Teams?

The overriding questions to ask your IT team in the Teams vs Slack analysis are:

  • Do your employees currently use Microsoft productivity services and would you like to integrate them into your employees collaboration?
  • Do you have a large number of users?
  • Do you want to integrate your communications system or contact center agents?
  • Does your organization need breakout rooms or Webinar registrations?

If you’ve answered yes to any of the above then Microsoft Teams is clear winner. If the answer is ‘no’ than both Slack and Teams will likely work for your business

Categories: Business Collaboration
Recommended For You
The Evolve IP Compliance CloudTM

Compliance is a way to do business … not an afterthought when clients need it.

At Evolve IP we have a dedicated compliance and security practice and work with two of the world’s top 3rd-party compliance auditors, Grant Thornton and Ernst & Young, to enable customers to extend their compliance to our fully audited cloud. This focus allows us to deliver the documentation and assurances that other’s simply cannot including HIPAA / HITRUST, PCI-DSS (all 12 sections), SOC 2/3 and more. The Compliance CloudTM includes true client isolation, encryption in transit and at rest, private VLANs, firewalls and dozens of other security measures.

What Our Clients Say
  • "Yesterday was, perhaps, my busiest day of client interaction either by phone or email since I have been a PM, and I don’t think any of my clients knew I was working from home unless I told them. I was also able to do trades behind the scene and interact with my team. So, for me, the technology has been working great. As an old guy, I am constantly dazzled by technology in general, but being able to do this stuff from home is amazing!"

    James C. Hunter, CFA, CFP, AIF, Senior Portfolio Manager, Principal

  • "Hey, IT people, As I’m working away in my home office, I just wanted to say thanks to you for all you’re doing, and have done in the past, to make it possible for us to run our company virtually. Not many of us JICers have jobs that everyone in the firm sees and could stop us from doing business. But you have this job, and do it well. Thank you for having the foresight and wisdom to get us in a position to succeed in a pandemic! You’re awesome."

    Michael D. Barnes, Esq., CTFA President, Principal

  • “That’s the type of proposition I like to bring to a Board of Directors. When I can say, ‘we can get everything new, be completely redundant, it can meet all of our needs and oh, by the way, we are going to save over $300,000 a year.’ It makes it easy for me to sell!”

    - Ken Schultz, CIO Ogletree Deakins

    Watch Testimonial

  • "The people that Evolve IP are more personable; you don't feel like there's necessarily a script when you're talking with them, they’re easy to understand, quick to get a hold of, and they follow through on what they say they're going to do."

    Watch Testimonial

  • "Evolve IP has been a vendor partner that has grown with us, that has helped us, and that you know stands by us and stands by their word."

    Watch Testimonial

What the Experts Think

Our analyst-acclaimed solutions are built on a world-class, compliant architecture that leverages the blue-chip technologies organizations already know and trust.


We deploy best-of-breed solutions including: Disaster Recovery, Contact Center, Unified Communications, DaaS, IaaS. Our services are analyst-acclaimed, vendor-validated, client recommended and award-winning.


Evolve IP is proud to have achieved the honor of being HITRUST CSF certified! Certification to the HITRUST Common Security Framework (CSF) affirms that all of Evolve IP’s cloud computing and cloud communications services adhere to the strictest security standards for electronic protected health information (PHI). The HITRUST security standard was developed by and for the healthcare industry as a means of going above and beyond the compliance requirements of HIPAA.

The HITRUST Common Security Framework (CSF) was developed to address the multitude of security, privacy and regulatory challenges facing healthcare organizations. The HITRUST CSF was developed by healthcare and IT professionals to provide an efficient and prescriptive framework for managing the security requirements inherent in HIPAA. HITRUST CSF rationalizes healthcare-relevant regulations and standards into a single overarching security framework. An important part of the “What is HITRUST” answer is understanding that the CSF is risk-based and compliance-based so that organizations can tailor the security control baselines and vendor management programs that they follow based on their specific organization type, size, systems, and regulatory requirements.


The Privacy regulations of the U.S. Health Insurance Portability and Accountability Act (HIPAA) require health care providers, organizations, and their business associates, develop and follow procedures that ensure the confidentiality and security of protected health information (PHI) when it is transferred, received, handled, or shared. This applies to all forms of PHI — paper, oral, and electronic, etc. Those who fail to adhere to HIPAA can suffer from huge fines climbing into the millions of dollars for major violations.

The Compliance Cloud™ fully enables covered entities and their business associates subject to HIPAA regulations to leverage a secure environment to process, maintain, and store protected health Information (PHI) featuring among other controls.

SSAW 16 Service Organization Control II (SOC 2)

Evolve IP has received an SSAE 16 SOC 2 Type II report on our internal controls relating to how we assess and address the potential risks associated with the security, availability, and confidentiality of not only the cloud-based services that we provide, but also our physical and logical infrastructure. Evolve IP utilizes the Certified Public Accounting firm of Grant Thornton to perform its annual audit and attestation in accordance with the Statements on Standards for Attestation Engagements No. 16 and the associated Trust Services Principles, as published by the AICPA, to evaluate the effectiveness of Evolve IP’s service organizations controls.


While Forbes regularly features coverage and recognition about Evolve IP, they've most recently recognized Evolve IP as being the "Best Cloud Computing Companies And CEOs To Work For In 2017".  They've ranked Evolve IP in the Top 3 just behind Google and Microsoft in the Cloud Infrastructure classification.  (Feb 2017). Forbes  also recently recognizes Evolve IP for bringing Singer Equipment Corporation, a mainstream business based in PA, into the cloud by means of unified communication. (Sept  2017). Last year, Forbes recognized Evolve IP's survey of 1,080 executives citing that the number one reason to go to the cloud is the same reason that it is avoided. (Mar 2016).

Unified Communications Product of the Year

TMC and Internet Telephony Magazine have named Evolve IP’s unified communications platform as a 2017 Unified Communications Product of the Year Award winner. This marks the 6th time Evolve IP has been honored with this prestigious award and follows a series of product innovations that have allowed the company to rapidly expand its international coverage.

Evolve IP’s business collaboration tools and IP phone system dramatically improve employee productivity in the office and on the road with a Unified Communications as a Service (UCaaS) platform that fully integrates voice, video, instant messaging & presence (IM&P), desktop sharing, audio/web conferencing and more. The company also provides a sophisticated Web-based management portal, OSSmosis®, that allows administrators to easily configure system functions and quickly modify users without the need to reach out to a third party for changes.


Inc. magazine has recognized Evolve IP in the 34th annual Inc. 500|5000, an exclusive listing of the nation's fastest-growing private companies. The list will be unveiled in the September issue of Inc.

The story of this year's Inc. 5000 is the story of great leadership. In an incredibly competitive business landscape, it takes something extraordinary to take your company to the top," says Inc. President and Editor-In-Chief Eric Schurenberg. "You have to remember that the average company on the Inc. 5000 grew nearly six-fold since 2012. Business owners don't achieve that kind of success by accident.

Payment Card Industry Data Security Standard (PCI DSS)

Evolve IP has achieved Payment Card Industry (PCI) Data Security Standard (DSS) compliance covering all 12 sections of the PCI DSS. The PCI data security standard is a comprehensive set of standards that require merchants and service providers that store, process, or transmit customer payment card data to adhere to strict information security controls and processes. It was created by the founding brands of the PCI Security Standards Council, which includes American Express, Discover Financial, JCB International, MasterCard Worldwide, and Visa Inc.


Evolve IP is also a registered and participating member of the CSA Security, Trust & Assurance Registry (STAR). The CSA was formed to encourage transparency of security practices within cloud providers. It is a free, publicly accessible registry that documents the security controls provided by various cloud computing offerings, thereby helping users assess the security of cloud providers they currently use or are considering contracting with. CSA STAR is open to all cloud providers, and allows them to submit assessment reports that document compliance to CSA published best practices. The searchable registry will allow potential cloud customers to review the security practices of providers, accelerating their due diligence and leading to higher quality procurement experiences. CSA STAR represents a major leap forward in industry transparency, encouraging providers to make security capabilities a market differentiator.

Deloitte’s Technology Fast 500TM

Evolve IP has been ranked for the second consecutive year on Deloitte’s Technology Fast 500™, a ranking of the 500 fastest growing technology, media, telecommunications, life sciences and energy tech companies in North America – both public and private. Technology Fast 500 award winners are selected based on percentage fiscal year revenue growth from 2012 to 2015. The list is a veritable Who’s Who of technology that has included tech companies like Google, VMware and Facebook.

Technology Fast 500 provides a ranking of the fastest growing technology, life sciences, and energy the companies – both public and private – in North America. Technology Fast 500 award winners are selected based on percentage fiscal year revenue growth during the period from 2012 – 2016.

Red Herring

Red Herring has named Evolve IP as one of the Top 100 Companies in North America.  Red Herring’s Top 100 recognizes the leading and most promising private companies from around the world. Among the over 20 criteria used to analyze companies for the award, Evolve IP was noted for its financial performance, technological innovation, customer footprint, the DNA of its founders and addressable market.

Red Herring selects the award winners for North America from approximately 1,200 privately financed companies each year in the US and Canada. Since 1996, Red Herring has kept tabs on these organizations and its editors were among the first to recognize that companies such as Facebook, Twitter, Google, Yahoo, Skype,, YouTube, Palo Alto Networks and eBay would change the way we live and work.


Evolve IP has been recognized as one of the “Best Entrepreneurial Companies in America” in Entrepreneur magazine’s Entrepreneur360™ Performance Index, a study involving a comprehensive analysis of private companies in America. Based on this study forged by Entrepreneur, Evolve IP is recognized as a company that exemplifies growth, not just in top and bottom line, but in sustainability and the ability to achieve lasting success.

According to Entrepreneur, after evaluating approximately 10,000 U.S. based firms, the team of editors and researchers behind the E360 Performance Index collected more than 250 pieces of data from the finalists, focusing on growth drivers and challenges, goal setting, resource allocations, and reward systems. The analysis uncovered a class of leading companies, including Evolve IP, whose continued success is largely based on superior value creation for their customers, building an adaptive learning culture, and aggressive geographic expansion—placing them amongst the most dynamic firms in America today.

Latest Press Releases

Evolve IP Named To The Gartner Magic Quadrant for Contact Center as a Service
November 16, 2020 / Evolve IP
Evolve IP today announced that Gartner has named it to the Magic Quadrant for Contact Center as a Service*. Evolve IP’s omnichannel offering, which runs 30-40% less than comparable...
Evolve IP Appoints Pete Stevenson as CEO and Randal Thompson as CRO to Drive Next Phase of Growth
October 16, 2020 / Evolve IP
Evolve IP, a leading global provider of Work Anywhere™ solutions, today announced that the Company’s Board of Directors has unanimously appointed board member Pete Stevenson as Chief Executive Officer....
Evolve IP Enhances Its Microsoft Teams and Cisco Voice Direct Routing Platform
September 22, 2020 / Evolve IP
Evolve IP announced that it has integrated SMS business messaging and voice recording with AI speech analytics into its Microsoft Teams direct routing platform.
Evolve IP Integrates Business Messaging Into Microsoft Teams; Enhances Microsoft’s Direct Routing Solution
September 17, 2020 / Evolve IP
Evolve IP® announced that it has launched a fully-integrated SMS / business messaging platform for its Microsoft Teams Direct Routing solution.
View More

Contact Us

or Call 1.877.459.4347