Microsoft Teams Premium: is the upgrade worth it for IT security?

The challenge: meetings are the new attachment

For years, data protection in Microsoft 365 meant protecting files and emails. Labels on documents, DLP on outgoing mail, encryption for attachments. Meanwhile, the most sensitive information in many organisations stopped travelling as attachments and started travelling as pixels: a quarterly forecast shared on screen five days before publication, a draft acquisition term sheet discussed with external advisors, a patient case reviewed with a research partner, a restructuring plan presented to the works council.

None of that content ever becomes a file in your tenant, so none of your file-based controls see it. What they do see, eventually, are the artefacts a meeting produces: recordings, transcripts, chat messages, AI-generated recaps. Each of those is a copy of the meeting that can be shared, forwarded or simply kept longer than anyone intended.

Standard Teams gives you solid controls for who gets into a meeting: lobby settings, presenter roles, restrictions for anonymous users, policies for recording and transcription. What it offers much less of is control over what participants can do with the content once they are in, and a way to apply a consistent set of protections to a meeting based on how sensitive it is, rather than relying on each organiser to click the right meeting options.

That gap is what the "advanced meeting protection" part of Teams Premium is designed to fill. The question this article tries to answer honestly is: for which meetings and which organisations does that matter enough to justify an additional licence?

A realistic case: three kinds of meetings, one licence question

Fabrikam Biotech AG is a listed Swiss biotech company with about 1,800 employees on Microsoft 365 E5. The CISO received a request from the board office to "make board meetings in Teams as secure as possible", and at the same time a request from the research department to protect video reviews of unpublished trial data with a contract research organisation (CRO). Finance added a third one: the quarterly results preparation, where numbers are shared on screen with external auditors before the ad hoc publication.

The IT team's first reaction was to buy Teams Premium for everyone. The finance team asked what that would cost and what exactly it would change. That was a good question, and answering it required looking at the three meeting types in detail:

Already in this table, three facts are visible that change the licence discussion: a requirement to record some meetings, a population that works in a virtual desktop, and participants who are external. We will see that each of these collides with one or more Premium protection features. Fabrikam's final answer, which I will come back to at the end, was very different from "Premium for everyone".

The security features in detail

How Teams Premium licensing works for security features

Teams Premium is an add-on. Users need a regular Teams licence and a Premium licence, and at least one active Premium licence must exist in the tenant before the Premium settings appear in the Teams admin center. The key to an economical licensing design is that Teams checks licences per feature and per meeting role:

• Organizer-based features apply to everyone in the meeting if the organiser has Premium. Attendees, including external ones, need no Premium licence. If an organiser with Premium uses a delegate to schedule meetings, the delegate does not need Premium either.
• Attendee-based features only benefit the licensed user.
• Admin-based features benefit administrators with a Premium licence.

Almost all meeting protection features are organiser-based. That is the single most important fact for the cost discussion.

One-to-one call end-to-end encryption, by contrast, is part of standard Teams and does not require Premium.

What you already have without Premium

Before buying anything, make sure the standard controls are configured well. In many tenants they are not, and a well-tuned standard configuration closes most of the realistic risks for everyday meetings.

PowerShell (MicrosoftTeams): a solid baseline meeting policy

Connect-MicrosoftTeams

Set-CsTeamsMeetingPolicy -Identity Global `
    -AutoAdmittedUsers "EveryoneInCompanyExcludingGuests" `
    -AllowPSTNUsersToBypassLobby $false `
    -DesignatedPresenterRoleMode "OrganizerOnlyUserOverride" `
    -AllowAnonymousUsersToStartMeeting $false `
    -AllowExternalParticipantGiveRequestControl $false `
    -NewMeetingRecordingExpirationDays 60

# Users may turn on end-to-end encryption for 1:1 calls (no Premium needed)
Set-CsTeamsEnhancedEncryptionPolicy -Identity Global -CallingEndtoEndEncryptionEnabledType DisabledUserOverride

Get-CsTeamsMeetingPolicy -Identity Global |
    Format-List AutoAdmittedUsers, AllowPSTNUsersToBypassLobby, DesignatedPresenterRoleMode, NewMeetingRecordingExpirationDays

Add to that what Microsoft 365 E3 or E5 already provides around Teams: sensitivity labels for teams and Microsoft 365 groups (container labels), Purview retention for chats, channel messages and recordings, Conditional Access for Teams sign-ins, and with E5, Purview DLP for Teams chats and channel messages. None of these protect the live meeting content itself, but together they cover most of what happens before and after a meeting.

Watermarks

A Teams Premium watermark overlays each participant's own email address on the shared content and/or on the video feeds they see. If someone takes a screenshot or films their screen with a phone, the result shows who leaked it. The control is deterrence and attribution, not prevention.

The admin enables watermarks in the meeting policy for the organisers who need them; the organiser (or a template or sensitivity label) then switches them on per meeting. Opacity and pattern can be configured, and you decide whether organisers may customise them.

PowerShell (MicrosoftTeams): meeting policy for organisers with watermark capability

New-CsTeamsMeetingPolicy -Identity "Premium-Protected-Organizers"

Set-CsTeamsMeetingPolicy -Identity "Premium-Protected-Organizers" `
    -AllowWatermarkForScreenSharing $true `
    -AllowWatermarkForCameraVideo $true `
    -WatermarkForScreenSharingPattern "Tiled" `
    -WatermarkForScreenSharingOpacity 30 `
    -WatermarkForCameraVideoPattern "Single" `
    -WatermarkForCameraVideoOpacity 25 `
    -AllowWatermarkCustomizationForScreenSharing $false `
    -AllowWatermarkCustomizationForCameraVideo $false

Know the trade-offs before enforcing watermarks broadly:

• Client support is limited. Watermarks render on the Teams desktop clients, Teams mobile and Teams Rooms on Windows. Teams on the web, virtual desktop scenarios and some meeting room platforms have historically not been supported, and participants on unsupported clients get a reduced experience instead of the protected content. Check the current support matrix and test with your actual VDI build before rolling out.
• Some sharing features are unavailable. PowerPoint Live, for example, is not available when shared content is watermarked; presenters share their screen or window instead.
• It is attribution, not DRM. A determined insider can still photograph a screen. The watermark makes that photo traceable, which is a strong deterrent for employees and contractors, and a weak one against someone who does not care about being identified.

End-to-end encryption for meetings

All Teams media is encrypted in transit and at rest by default. With end-to-end encryption (E2EE), the media streams are additionally encrypted on the sending client and only decrypted on the receiving clients, so the service itself cannot access the audio, video and screen-sharing content. Participants can compare a 16-digit encryption code shown in the meeting to verify that they are in the same encrypted session.

The Global enhanced encryption policy allows Premium organisers to schedule E2EE meetings by default. If you want to restrict E2EE to specific people, change that and grant a separate policy:

PowerShell (MicrosoftTeams): control who can schedule E2EE meetings

# Nobody by default ...
Set-CsTeamsEnhancedEncryptionPolicy -Identity Global -MeetingEndToEndEncryption Disabled

# ... except a defined group of organisers
New-CsTeamsEnhancedEncryptionPolicy -Identity "E2EE-Meetings-Allowed" `
    -MeetingEndToEndEncryption DisabledUserOverride `
    -CallingEndtoEndEncryptionEnabledType DisabledUserOverride

# Requires Connect-MgGraph -Scopes "GroupMember.Read.All" in the same session
$organizers = Get-MgGroupMember -GroupId "<object-id-SG-Board-Office>" -All
foreach ($o in $organizers) {
    Grant-CsTeamsEnhancedEncryptionPolicy -Identity $o.Id -PolicyName "E2EE-Meetings-Allowed"
}

The value DisabledUserOverride means: off by default, the organiser may turn it on (or a template or label may enforce it). E2EE comes with substantial functional limits, because everything that needs the service to process media stops working:

Client and size restrictions matter as well: E2EE meetings support up to 200 participants. Participants must use supported clients, which are the Teams desktop apps, Teams mobile and supported Teams Rooms devices; Teams on the web, virtual desktop infrastructure and Cloud Video Interop are not supported, and on Teams Rooms devices and Surface Hub E2EE meetings are limited to 50 participants. Apps, reactions, chat, filters and Q&A are not covered by E2EE; only the real-time media is.

Sensitivity labels for meetings

This is, in my view, the most valuable Premium protection feature for larger organisations, and also the one with the highest prerequisites: Teams Premium for the organiser plus Microsoft 365 E5 (or E5 Compliance, F5 Compliance, F5 Security + Compliance). A sensitivity label with the "Meetings" scope can carry Teams meeting settings. When the organiser applies the label to an invite, Teams configures the meeting accordingly and, where the label says so, locks those settings.

Settings a meeting label can control include: who can bypass the lobby, who can present, whether people dialling in can bypass the lobby, whether meeting chat is available, preventing copying of chat content, end-to-end encryption, watermarks for video and shared content, and who can record. Labels can also be recommended or applied based on the sensitivity of files shared in the meeting ("adjust meeting sensitivity based on shared files").

Labels also travel with the calendar item: a labelled invite shows its classification in Outlook, and the label can apply encryption to the invite itself through the label's protection settings. Two operational notes: labels with meeting settings must be published to the organisers through a label policy, and you should design them as a small ladder (for example General, Confidential, Highly Confidential) rather than a long list, because organisers choose labels in a dropdown, not in a training session.

Custom meeting templates

Custom meeting templates, created by IT in the Teams admin center, let organisers pick a meeting type ("Board meeting", "Customer call with NDA", "Interview") instead of configuring options individually. A template can preset and lock meeting options, apply a sensitivity label and hide settings from the organiser. Template policies control which templates which users see.

Templates and labels complement each other: templates are about the meeting format and are available with Premium alone; labels are about classification and protection and need E5. If you do not have E5, templates with locked settings are your main enforcement mechanism.

The other protection controls

• Who can record and transcribe: restrict recording to organisers and co-organisers, or nobody, per meeting or through templates and labels. Standard Teams lets you allow or block recording per policy; Premium adds per-meeting control over who may do it.
• Prevent copying or forwarding of meeting chat, live captions, transcripts and recap content.
• Prevent screen capture: on supported clients and operating systems, the meeting window content appears blank in screenshots and screen recordings taken with OS tools. Like the watermark, this is not effective against a camera pointed at the screen.
• Detect sensitive content during screen sharing: warns when shared content appears to contain sensitive information.
• Require unverified participants to verify their info (for example with an email one-time code) before they join, which closes the gap of anonymous participants with a self-chosen display name.
• Prevent users from sharing content in external Teams meetings: useful for groups that must not present internal content in meetings organised by other companies.
• Hide attendee names for meetings where participants should not see each other's identity, and priority account chat controls to protect executives from unsolicited internal chats.

A three-tier protection model

Microsoft's own guidance describes meeting protection in tiers. I find a three-tier model easy to explain to organisers and easy to map to labels and templates:

Testing protection against your real client landscape

The most common reason Premium protection projects fail is not configuration, it is an untested client. Before you enforce a label or lock a template, run a test matrix with every client type that your organisers' typical participants use. Fabrikam's matrix looked like this; the empty boxes are filled in from your own tests, because support changes over time:

Document for each combination whether the participant gets the full experience, a reduced experience or is blocked, and give the result to the organisers. An organiser who knows that the external auditors join from a browser will choose a different template than one who finds out five minutes into the meeting.

Implementation with PowerShell

The pattern Fabrikam used: a dedicated security group per Premium population, group-based licence assignment, and group policy assignment for the Teams policies.

PowerShell: licence and policy assignment for Premium organisers

# 1. Find the Teams Premium SKU
Connect-MgGraph -Scopes "Organization.Read.All","Group.ReadWrite.All","Directory.ReadWrite.All"
Get-MgSubscribedSku | Where-Object SkuPartNumber -like "*Premium*" |
    Select-Object SkuPartNumber, SkuId, ConsumedUnits

# 2. Group-based licensing on SG-Teams-Premium-Organizers
$groupId = "<object-id-SG-Teams-Premium-Organizers>"
Set-MgGroupLicense -GroupId $groupId -AddLicenses @(@{ SkuId = "<teams-premium-sku-id>" }) -RemoveLicenses @()

# 3. Meeting policy with watermark capability for the same group
Connect-MicrosoftTeams
New-CsGroupPolicyAssignment -GroupId $groupId -PolicyType TeamsMeetingPolicy `
    -PolicyName "Premium-Protected-Organizers" -Rank 1

# 4. Verify the effective policy for one organiser
Get-CsUserPolicyAssignment -Identity "cfo@fabrikam.example" -PolicyType TeamsMeetingPolicy

The critical assessment: when Premium is essential and when it is not

Teams Premium's protection features are real and well implemented. But each of them has a cost beyond the licence, and those costs land in exactly the places where sensitive meetings happen. An honest evaluation has to weigh both sides.

Where the features fall short

The most important tension in 2026 is between E2EE and AI. Many organisations are rolling out Microsoft 365 Copilot and expect meeting recaps, action items and searchable transcripts. E2EE switches all of that off, by design. For a board meeting that is often desirable. For a weekly project meeting it is a productivity loss nobody will accept for long. The second tension is regulatory: some regulated processes require a recording, which rules out E2EE for exactly those meetings.

Scenarios where Premium is essential

• Board and executive committee meetings of listed companies or organisations with inside information. Labels with E2EE, watermarks and restricted lobby settings fit the risk profile, the participant count is small and recordings are usually not wanted.
• M&A, financing and restructuring projects with external advisors, where screen-shared numbers are the most sensitive artefact and leaks have legal consequences.
• Research and development reviews of unpublished results or intellectual property with external partners, where attribution via watermark is a meaningful deterrent.
• HR and legal cases such as disciplinary hearings, where who can record and who can see attendee names matter.
• Organisations with a "need to know" culture already using sensitivity labels and E5, for whom meeting labels close the last unlabelled channel.

Scenarios where standard Teams is enough

• Everyday internal collaboration. A well-configured lobby, presenter roles, recording expiry and Conditional Access cover the realistic risks.
• Customer and supplier meetings without specially protected content. Lobby settings and verified participants matter more than watermarks.
• Meetings that must be recorded or transcribed for compliance, documentation or accessibility. E2EE is not an option, and watermarks alone rarely justify the licence.
• Populations working in VDI or on Teams for the web. Until client support for watermarks and E2EE covers your environment, the protection simply does not reach these users.

Back to Fabrikam

Fabrikam licensed Teams Premium for 42 organisers instead of 1,800 users: the board office and its delegates, the executive committee, finance leadership, the investor relations team and the clinical project leads. The meeting types were mapped as follows:

The licence cost was a fraction of the original estimate, and the protection reached exactly the meetings that needed it. The remaining 1,750 users benefited from a reworked Global meeting policy, which cost nothing.

A decision checklist

1. Configure the standard baseline first and measure what is still missing.
2. Identify the meeting types with genuinely sensitive live content, and who organises them.
3. For each type, check the constraints: recording obligations, AI expectations, external participants, client platforms (VDI, web, room systems).
4. Check whether you have E5 for meeting labels; if not, plan around templates.
5. License the organisers, not the attendees.
6. Pilot one meeting type for a quarter, review the Premium usage report, then expand or stop.

Why this decision matters

Meetings have become the place where decisions are made and where the most sensitive information is shown, often before it exists in any document. Treating meeting content as unprotected while investing heavily in file and email protection leaves an obvious gap, and attackers and insiders are perfectly capable of noticing it.

At the same time, security controls that ignore how people work get bypassed. A board that cannot use its tablets, a research team that cannot record its mandatory sessions or a finance team locked out by its own VDI will find another tool, and that tool will be less secure than Teams with standard settings. The value of Teams Premium's protection features lies in applying them precisely: to the right meetings, through templates and labels rather than individual organiser decisions, and with full awareness of what each control turns off.

There is also a governance argument. Regulators, auditors and boards increasingly ask how inside information and personal data are protected in collaboration tools. "We use the standard settings" is a weak answer for a board meeting. "Board meetings use a dedicated template and label that enforces end-to-end encryption, watermarks and restricted access, and the organisers are trained" is a strong one, and it is an answer that costs 42 licences, not 1,800.

Finally, the decision is not permanent. Microsoft has moved features between Teams Premium and Teams Enterprise before, most recently in April 2026. Review the licensing every year against the meetings you actually protect, and keep your configuration in templates and labels so that it survives the next licensing change.

Checklist

• Global meeting policy reviewed: lobby, presenters, anonymous users, recording expiry.
• 1:1 call E2EE allowed for users (no Premium required).
• Sensitive meeting types and their organisers identified.
• Constraints documented per meeting type: recording, Copilot, external participants, VDI and web clients.
• Teams Premium licensed for organisers through a group; dedicated meeting policy with watermarking assigned.
• Enhanced encryption policy restricts E2EE meetings to the organisers who need it.
• Meeting labels (with E5) or locked templates for each protection tier.
• Label policy publishes meeting labels to the organisers.
• Organisers trained on templates and labels, not on individual options.
• Premium usage report reviewed quarterly; licence count adjusted.