Microsoft Teams vs Nextcloud Talk: when each option fits
If you are facing a Teams renewal, a data residency rule, or a wish to keep chat, calls and files in one self-hosted place, the first question is not which product looks better but how large your calls will be. Microsoft Teams fits best where the organization already runs a Microsoft 365 estate, where Entra ID, Outlook and SharePoint are the daily tools, and where meetings regularly exceed small peer-to-peer calls and nobody on the team wants to operate a media server. Nextcloud Talk fits best where a self-hosted Nextcloud Hub is already in use and where the business requires that chat, files and call metadata stay on servers the organization controls. In that case Talk adds collaboration to a platform your administrators already patch, back up and audit.
The gap between the two sits in the call design. Without the High Performance Backend, Talk calls are peer to peer, and the Talk documentation says that about 20 users is possible in a typical setup only with fast connections and video disabled. Larger meetings, webinars with a lobby, and SIP dial-in by phone require the High Performance Backend, which adds a selective forwarding unit and signaling offload. Confirm with Nextcloud whether that backend is sold through its sales team, since the documentation describes it as a partner product that enterprise users obtain that way, and budget for it as a separate component from the Talk app. Teams includes meetings in the Microsoft 365 license, so the cost comparison changes once you add that backend, its hosting and the staff who tune it.
The decision turns on three questions. First, what is the largest call your organization must hold, and how often will it happen? Second, do you need webinars, lobbies and dial-in numbers for external audiences, which points toward running the High Performance Backend? Third, who will operate the stack: a team that already runs Nextcloud upgrades one major version at a time with backups before each step, or a group with no such routine? Ask the Nextcloud partner or your implementation provider for a written sizing based on your peak participant count and network path, and test a representative meeting with real users before you commit to a cutover date.
Which option fits which scenario
This table matches the common starting points for Teams customers and Nextcloud users against Nextcloud Talk, and names the better fit with the reason. Read each row against your own call sizes, webinar load and hosting rules before deciding.
| Scenario | Better fit | Reason |
|---|---|---|
| Microsoft 365 estate with Teams already licensed | Microsoft Teams for now | Teams is already paid for and integrated with Outlook and SharePoint. Moving to Talk means rebuilding meetings and chat, so plan that work before any license decision. |
| Nextcloud file server seeking chat and calls | Nextcloud Talk | Talk sits in the same Nextcloud Hub as your files, sharing and accounts. Small internal calls work peer to peer, and the High Performance Backend covers larger meetings. |
| Regulated team that needs data on its own servers | Nextcloud Talk, if calls stay small or the High Performance Backend is in scope | Talk runs inside your own Nextcloud instance. Confirm the High Performance Backend deployment and its hosting with Nextcloud before relying on it for larger calls. |
| Frequent calls with 20 or fewer participants and video on | Check bandwidth first | The Talk documentation says about 20 users is possible only with fast connections and video disabled, at roughly 1 Mbit/s per video stream. Video calls above that size need the High Performance Backend. |
| Frequent large webinars or town halls | Nextcloud Talk with the High Performance Backend, or a dedicated webinar tool | Webinars with a lobby and SIP dial-in are listed as features that need the High Performance Backend. Confirm capacity for your audience size with Nextcloud. |
| Teams is needed for external partners and Microsoft meetings | Microsoft Teams, or Talk with bridges | Talk offers bridges to Teams and Matrix, but confirm which meeting types, recording and presence features the bridge carries before planning a cutover. |
| Microsoft suites without Teams for new subscribers | Nextcloud Talk or another self-hosted chat | Since April 1, 2024, Microsoft sells suites without Teams outside the EEA and Switzerland, and existing suites with Teams are no longer sold to new subscribers worldwide. Re-check your license terms. |
Microsoft Teams vs Nextcloud Talk features side by side
This table compares the chat, call and file capabilities that the Nextcloud Talk documentation and product page describe against Microsoft Teams. Where a Teams capability is not covered by the researched sources, the cell tells you what to confirm in current Microsoft documentation before deciding.
| Capability | Microsoft Teams | Nextcloud Talk |
|---|---|---|
| Call scale without extra backend | Confirm current participant limits in Microsoft documentation | About 20 users in a typical setup, only with fast connections and video disabled |
| Call scale with the extra backend | Confirm current participant limits in Microsoft documentation | High Performance Backend supports roughly 30 to 50 or more active participants plus hundreds of passive ones |
| Webinars with lobby | Confirm against current Teams webinar and lobby documentation | Supported, but requires the High Performance Backend |
| SIP dial-in by phone | Confirm dial-in plans and licensing with Microsoft | Supported, but requires the High Performance Backend |
| Call recording with transcripts | Confirm recording and transcript options and licensing with Microsoft | Supported |
| Breakout rooms | Confirm current availability in Microsoft documentation | Supported |
| End-to-end encrypted calls | Confirm encryption scope for meetings and chat in Microsoft documentation | Supported on web and desktop |
| Federation across servers | Confirm external access and federation settings in Microsoft documentation | Supported across Nextcloud servers |
| Bridges to other chat systems | Confirm supported interoperability in Microsoft documentation | Bridges to Matrix, Slack, Teams, IRC and XMPP |
| Outlook invitations | Native Outlook and Teams meeting integration, confirm details with Microsoft | Outlook integration sends Talk invitations |
| File sharing in the same product | Files tab backed by SharePoint and OneDrive, confirm with Microsoft | Files are part of Nextcloud Hub, in the same server as chat and calls |
| Single sign-on | Microsoft Entra ID, confirm supported protocols with Microsoft | LDAP and Active Directory login, plus OpenID Connect and SAML backends |
Where peer-to-peer calls end and the High Performance Backend begins
Calls without the High Performance Backend are peer to peer, meaning each participant's client sends media directly to the others. The Talk scalability documentation says that about 20 users are possible in a typical setup, but only with fast connections and video disabled. That is the realistic ceiling for a daily stand-up or a short internal huddle where most people share audio only. Video changes the math: the documentation puts each video stream at roughly 1 Mbit/s, and every added camera multiplies the upload and download each client must handle. Without an SFU, there is no server that relays media, so the load falls on participants' networks and devices.
- Peer-to-peer ceiling: about 20 users in a typical setup, with video off and fast connections.
- Video cost per participant: roughly 1 Mbit/s per video stream, carried by each client.
- No relay in this mode: the server handles signaling, but it does not forward media.
- Upgrade path: the High Performance Backend adds a selective forwarding unit and signaling offload when calls outgrow this model.
- Procurement: the backend is obtained through Nextcloud sales, so it belongs in the initial scope rather than a later add-on.
Before you commit, check the typical call size and video usage in your own organization against these limits, and test with your real network paths.
Once a meeting has many video participants, peer-to-peer media becomes the bottleneck. The High Performance Backend adds a selective forwarding unit, which receives each participant's stream once and forwards only what each client needs, plus signaling offload that moves call coordination away from the Nextcloud server. The Talk documentation describes support for roughly 30 to 50 or more active participants, plus hundreds of passive ones who listen without sending media. The exact limit depends on the server hardware, bandwidth and the share of participants with video on, so treat the figure as a planning range to verify in a pilot.
- Active versus passive: active participants send audio and video, while passive participants only receive.
- Forwarding model: the SFU relays media, so each client uploads one stream instead of one per peer.
- Signaling offload: call setup and coordination load moves off the main Nextcloud application.
- Sizing input: plan with the expected active count, the video share and the number of concurrent calls.
- Source of the component: ask Nextcloud sales for the backend, its licensing and the supported deployment model.
Ask for a written sizing estimate tied to your peak meeting profile, and confirm which parts of the backend your installation method, such as Nextcloud All-in-One, supports.
Webinars with a lobby and SIP dial-in by phone are features that Nextcloud lists as needing the High Performance Backend. The lobby holds attendees until a moderator admits them, which matters for public sessions, customer briefings and executive town halls. SIP dial-in lets participants join from a telephone line, which means the telephony connection is a separate integration to plan, secure and test. Passive attendees fit the scale range the backend describes, but the presenters and any panelists who send media count as active participants, so their number drives the sizing.
- Lobby control: moderators admit attendees, which supports public or external sessions.
- SIP dial-in: phone access requires a backend component and a telephony path into your network.
- Presenter count: only the people sending media count toward the active limit.
- Attendee count: hundreds of passive listeners are within the range the documentation describes.
- Telephony planning: confirm the SIP trunk, number provisioning and call costs with your telecom provider, since those sit outside Nextcloud.
Before a webinar program starts, run a rehearsal with the real presenter count and dial-in path, and confirm the dial-in setup with Nextcloud sales and your telecom provider.
What you pay for on each side
Chat and calls cost more than the software line item. On the Microsoft side, the bill follows licensing decisions; on the Nextcloud Talk side, it follows subscriptions, scale tiers and the people who keep the platform current. Each card below names one cost component, whether it is one-time or recurring, and what moves it.
Microsoft Teams licensing
Recurring per-user licensing is the Teams cost you already pay. Since April 1, 2024, Microsoft sells Microsoft 365 and Office 365 suites without Teams outside the EEA and Switzerland, and standalone Teams is offered separately, so the license you keep may change the price and scope of what you buy. Check whether your current contract bundles Teams, what your renewal term is, and which users need Teams licenses for chat history export.
Nextcloud Enterprise subscription
Recurring annual subscription that buys support, maintenance lifecycle and access to enterprise features, sold in Standard, Premium and Ultimate tiers with a 100-user minimum. Community Nextcloud Talk costs nothing to license, but a subscription is what sets your upgrade window and support hours. Request written quotes for each tier, and confirm which tier covers clustered instances and response times you need.
High Performance Backend
Recurring, sold through Nextcloud sales because it is a partner product rather than a self-serve download. You need it for calls beyond the roughly 20 participants that peer-to-peer supports with video off, and for webinars, lobby and SIP dial-in. Cost rises with expected concurrent participants and webinar use. Ask Nextcloud for pricing tied to your peak call size and whether it is licensed per instance or per user.
Hosting and infrastructure
Recurring compute, storage and bandwidth in your own cloud account or data center, plus one-time setup of database, caching and reverse proxy. Recording and TURN traffic add storage and bandwidth load, and the High Performance Backend adds servers of its own. Ask your team to size the database, the recording storage and the media path for your user count before comparing the total with Teams.
Upgrade and backup operations
Recurring staff time for upgrades, backups and restores, which Nextcloud does not perform for you on a self-hosted instance. Major versions must be applied one at a time, with a backup before each upgrade and third-party apps disabled until confirmed compatible. Estimate the hours from your change calendar and on-call rota, and ask any services firm you engage whether upgrades and backup testing are in a retainer or a fixed-scope project.
Identity and bridge integration
One-time integration work to connect LDAP or Active Directory, OpenID Connect or SAML, and any bridges to Matrix, Slack, Teams or XMPP that you need during migration. Identity setup usually decides the cost here, because user lifecycle and login rules must match your directory. Ask for a written scope that names each identity source, each bridge, the test plan and who owns the bridge after handover.
How AGPL licensing and Enterprise tiers change the decision
The licensing question for Nextcloud Talk is less about the chat feature and more about what you can change and who answers when something breaks. Nextcloud Server is licensed under AGPL-3.0, and contributions from 16 June 2016 onward are licensed under AGPLv3 or any later version. Under the AGPL, if you run a modified version and let users interact with it over a network, you must make your modified source available to those users. Talk is an app inside that server, so a custom Talk patch, a branded client or a bundled integration can fall under the same obligation. Ask your legal team to review how your internal changes will be distributed, and ask your integrator to keep every modification in version control so the source can be produced on request.
Nextcloud GmbH sells Nextcloud Enterprise alongside the community version, and the tiers differ in what you buy. According to Nextcloud's pricing page, Standard includes 1-year maintenance, Premium adds a maintenance lifecycle of 5 or more years, extended support hours and clustered instance support, and Ultimate adds support up to 24/7 with response times down to 1 hour. The Enterprise subscription has a 100-user minimum. Confirm with Nextcloud whether a clustered instance is required for your Talk deployment, and whether the High Performance Backend is covered by your tier or sold separately, since the Talk documentation describes it as a partner product obtained through Nextcloud sales. Also confirm the support hours and response times you actually need for calls during business hours in every region where your staff work.
Decide the High Performance Backend question from your call profile before you price anything. Peer-to-peer calls are workable only for small groups with fast connections and video disabled, and larger meetings, webinars and SIP dial-in need the backend. On the Teams side, the April 1, 2024 change means Microsoft 365 and Office 365 suites without Teams are sold outside the EEA and Switzerland, and existing suites with Teams are no longer sold to new subscribers worldwide. That affects how your Teams licensing is structured and when you need to decide, and you should check your own contract terms and Microsoft's licensing guidance rather than assume the change applies or does not apply to your agreement. Whichever way you go, keep the release cadence in mind: Nextcloud supports each major version for one year, so budget for regular upgrades, each taken one major version at a time.
Data location, identity and compliance on your own terms
Moving from Microsoft Teams to Nextcloud Talk changes where chat, call metadata and files live, how people sign in, and what evidence you can show an assessor. The cards below cover the decisions that follow from those changes, and the checks to run before you commit.
Data location under your control
Teams chat and meeting data sit in Microsoft's cloud, governed by the tenant and Microsoft's data boundary commitments. With Nextcloud Talk, messages, files and recordings sit on servers your organization runs, in the data center or cloud accounts you choose. Confirm where backups, logs and the Talk signaling path are stored, since a call can still depend on components outside your network, such as a TURN server or an external High Performance Backend.
Hosting model and components
Choose the hosting model before the architecture. A self-managed install on virtual machines gives full control but leaves you to assemble caching, database, backups and upgrades. Nextcloud All-in-One is the official installation method and bundles Redis and APCu caching, PostgreSQL, Talk with recording, BorgBackup-based backups and ClamAV. A Helm chart covers Kubernetes. Ask which of these your platform team can operate.
Directory and single sign-on
Nextcloud's LDAP app lets Active Directory and LDAP users appear in Nextcloud and sign in with their directory credentials. Nextcloud also documents OpenID Connect and SAML user authentication backends. Confirm which backend matches your identity provider, how group membership maps to Talk rooms, and how deprovisioning removes access to chat and files when someone leaves.
End-to-end encrypted calls
Nextcloud Talk offers end-to-end encrypted calls on web and desktop. Test whether your required participant mix, recording and dial-in needs are compatible with encryption, because features such as server-side recording and SIP dial-in work differently from encrypted peer calls. Document which call types are encrypted, which clients are supported, and what users see when encryption is unavailable.
Compliance evidence you assemble
Your assessor will ask for evidence of access control, logging, backup restores, patching and retention. Nextcloud's supported release cycle and written upgrade rules give you dated inputs for that evidence, but the controls are yours to configure and show. DeployOpen prepares systems, controls and evidence for compliance assessments. Independent auditors and certification bodies issue the reports and certifications.
What a move from Teams to Nextcloud Talk involves
The sequence moves chat, calls and files from Microsoft Teams into a self-hosted Nextcloud Hub that the organization runs, with each step ending in a check the owners can verify before the next one starts.
Assess scope and call sizes
Inventory the teams, channels, guest access and meeting types in use, then measure the typical and largest call sizes, with and without video, by department. DeployOpen and the client's IT lead do this together, and the output is a written scope listing which call types must work on day one. Confirm the export path with Nextcloud before you commit, because the supplied facts do not document a Teams importer for Talk. The step is done when the scope is signed off in writing.
Size the Nextcloud Hub and backend
Choose the deployment method, such as Nextcloud All-in-One or a manual install, and the database and PHP versions from the current system requirements. Decide whether the High Performance Backend is needed. Peer-to-peer calls suit small groups with video off, while webinars, lobbies, SIP dial-in and larger calls need the backend, which Nextcloud describes as a partner product that enterprise users obtain through its sales team. The output is a sizing record and a purchase or no-purchase decision for the backend.
Integrate identity and access
Connect the Hub to the directory through the LDAP app, or to an OpenID Connect or SAML backend, so users sign in with their existing credentials. Map Entra ID or Active Directory groups to Nextcloud groups that control access to Talk rooms and Files folders. Test sign-in, deprovisioning of a leaver account and group membership on a non-production instance. The step is done when a test user gets the expected rooms and folders and a disabled account loses access.
Extract Teams chat and meeting artifacts
Use the Microsoft Graph Teams Export APIs to pull 1:1, group, meeting and channel messages, plus meeting recording and transcript links. An administrator must approve the application permissions, and each exported user needs an active Teams license, so plan license assignments before the export runs. Store the output in a controlled location with access logs. The step is done when the export is complete and a sample of messages has been checked against the source in Teams.
Map teams and channels to Talk and Files
Translate each team and channel into a Talk conversation with its members and moderators, and create matching Files folders for shared documents and recordings. Decide how historical content is kept: as archived files in Nextcloud, as reference material, or not migrated at all. Document the mapping in a table that the business owners approve. The step is done when every team has a named owner and a target conversation or folder.
Run a pilot with real call types
Select a pilot group and run the call types they actually use: one-to-one calls, group calls with video on and off, a webinar with a lobby, dial-in from a phone, screen sharing and recording. Measure call quality on the network paths your users have, and record any failures against the backend sizing from step two. The step is done when the pilot group signs off that each call type works and the open issues have owners.
Cut over and retire Teams use
Announce the cutover date, move new conversations to Talk, and set Teams to read-only for migrated teams if your tenant policy allows it. Check bridges to Matrix or Teams that you plan to keep during the transition, since Talk lists them as available features. Keep the export archive and rollback notes until the business owners accept the new service. The step is done when new chats and calls run in Talk and the owners confirm that no active work depends on Teams.
Enable users and hand over operations
Train users on Talk, Files and the desktop and mobile clients, and publish short guides for calls, recording and sharing. Agree the operating model for upgrades, which Nextcloud requires one major version at a time with a backup before each step and third-party apps disabled until confirmed compatible, and for backups and support. Record which work DeployOpen performs under a retainer and which stays with the client. The step is done when the runbook is accepted and the first upgrade plan is scheduled.
Questions buyers ask before choosing Nextcloud Talk
What drives the cost of running Nextcloud Talk ourselves?
Cost depends mostly on the hosting, the people who operate the stack, and whether you add paid Nextcloud support. The Nextcloud server is licensed under AGPL-3.0, so there is no per-user license fee for the community version. Recurring costs include servers or cloud capacity, storage, backups, TURN and signaling infrastructure, and staff time for upgrades and monitoring. Larger calls add the High Performance Backend, which Nextcloud describes as a partner product that enterprise users obtain through Nextcloud sales, so ask for its pricing in writing. If you want vendor maintenance, Nextcloud Enterprise is sold in Standard, Premium and Ultimate tiers with a 100-user minimum and list prices starting at 71.29 euros per user per year for 100 or more users, according to Nextcloud's pricing page. Ask any quote to separate one-time setup from annual subscription and recurring operations.
How long does a Nextcloud Talk pilot take to stand up?
No fixed duration can be given here because it depends on the environment, the identity source, the number of call types you need, and whether the High Performance Backend is in scope. A pilot usually covers an install on a test instance, directory login, a small group of users, and a few calls at realistic sizes. Nextcloud All-in-One is the official installation method and bundles Talk with recording, so it can shorten the install step, but it does not remove integration and testing work. Ask any provider for a written scope and timeline before work starts, and confirm which components your pilot must include.
What does our team need to provide for the work?
You need a named owner for the platform, administrators who can manage the Nextcloud server and its database, and someone who can approve the identity integration. Expect to supply hosting in your own cloud account, data center or network, DNS and TLS certificates, mail settings for notifications, and access to your directory. For LDAP or Active Directory, Nextcloud's LDAP app lets directory users log in with their directory credentials, so your identity team will be involved. Confirm with your security team which recording, retention and encryption rules apply before you enable them.
Can our own IT team run Nextcloud Talk without outside help?
Yes, if you have administrators comfortable with Linux, PHP-based web applications, a relational database and reverse proxies. The Nextcloud 35 system requirements recommend MariaDB 11.8 or PostgreSQL 18, PHP 8.5 with 8.3 and 8.4 supported, and Apache 2.4 or nginx with php-fpm. Oracle Database is only available with an enterprise subscription. Talk also depends on signaling and TURN services for reliable calls, and larger meetings need the High Performance Backend. Most teams combine internal operations with a support contract for upgrades, backups and incident response, and the choice depends on your staffing and support hours.
At what call size do we need the High Performance Backend?
Calls without the High Performance Backend are peer to peer. The Nextcloud Talk scalability documentation says about 20 users are possible in a typical setup only with fast connections and video disabled, at roughly 1 Mbit/s per video stream. For larger calls, webinars with a lobby, or SIP dial-in by phone, Nextcloud lists the High Performance Backend as required. The backend adds a selective forwarding unit and signaling offload, and the documentation puts it at roughly 30 to 50 or more active participants plus hundreds of passive ones. Test with your own bandwidth profile, because the threshold depends on network conditions and video use.
How do Nextcloud upgrades work, and what do we back up first?
Nextcloud does not allow skipping major releases. You upgrade one major version at a time, back up before every upgrade, and disable third-party apps until they are confirmed compatible, according to the Nextcloud upgrade manual. Nextcloud publishes a new major version every four months and supports each for one year through monthly maintenance releases that fix known critical bugs and security problems. Nextcloud 35 was released on 16 September 2026 and reaches end of life in September 2027, and Nextcloud 36 is scheduled for 17 February 2027. Plan a recurring upgrade window in your operating budget, and test each step in a staging copy first.
Can DeployOpen take on the Nextcloud Talk work under a fixed scope?
DeployOpen plans, implements, customizes, integrates, hardens, backs up, upgrades, documents and supports self-hosted open-source platforms inside your own infrastructure, and most engagements are fixed-scope with scope, deliverables and timelines agreed in writing before work starts. Ongoing support, upgrades and continuous testing are available as retainers. DeployOpen does not publish a price list, so a quote follows from the written scope. Ask for the scope to list the Talk features you need, the call sizes, the identity integration, the backup and upgrade process, and any High Performance Backend work. DeployOpen is not an official Nextcloud partner unless that is confirmed separately.
Does Nextcloud Talk replace our compliance evidence on its own?
No. Nextcloud Talk is a platform, and it does not produce audit reports or certifications. Your independent auditor or certification body issues any assessment, while DeployOpen can prepare systems, controls and evidence for a compliance assessment but does not issue audit reports, attestations or certifications. Ask for the controls you need to evidence, such as access, logging, backup and change records, and check which Talk features, such as recording and transcripts, fall under your retention rules before you enable them.
How DeployOpen helps you evaluate, implement and migrate
DeployOpen is a Chainscore Labs company that plans, implements, integrates, hardens, backs up and documents self-hosted open-source platforms inside your own cloud accounts, data centers or air-gapped networks. For a move from Microsoft Teams to Nextcloud Talk, we work from the call sizes, recording needs and file rules you actually have, then build and hand over the Nextcloud Hub environment in writing.
How we scope
- Map which Teams chat, meeting and files workloads move to Talk and which stay in Microsoft 365.
- Size typical and largest calls to decide whether the High Performance Backend is in scope.
- Agree deliverables, timelines and exclusions in writing before any work starts; engagements are fixed-scope.
How we build
- Install Nextcloud Hub with Talk on your infrastructure, choosing database, web server and PHP versions from current requirements.
- Connect directory sign-in through LDAP or Active Directory, or document the OpenID Connect or SAML option you select.
- Configure call recording, webinars, SIP dial-in and bridges to Matrix or Teams only where the written scope includes them.
How we hand over
- Test chat, calls, file sharing and recovery against the acceptance criteria agreed in the scope.
- Document the installation, upgrade path, backup routine and third-party app review process for your operators.
- Prepare the compliance-relevant configuration records your own auditors will request; we do not issue audit reports or certifications.
How we support
- Plan upgrades one major version at a time, with a backup taken before each change and apps re-checked for compatibility.
- Offer ongoing support, upgrades and continuous security testing as a retainer after handover.
- Run security testing of the deployed applications, infrastructure and APIs when you want independent validation of the setup.
