Sovereign and modern S4B alternative communications platform

Skype for Business Server is retired. What’s next?

Microsoft offers two paths forward: Subscription Edition or Microsoft Teams. Rocket.Chat gives you a third: secure, sovereign collaboration that complements your existing setup.

Flexible deployment. On-prem, private cloud, or air-gapped for data sovereignty.

Enhance Microsoft investments. Chat across Rocket.Chat and MS Teams users.

Unified collaboration. One platform for secure chat, voice and video calls.

Predictable upgrades. Update on your schedule. No multi-step migrations.

Future-ready platform. Evolve with a long-term roadmap, not a temporary pause.

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Deployed by secure organizations globally

What retiring Skype for Business Server really means

From security gaps to compliance headaches, end-of-life software can slow growth. Know the stakes to plan smarter.

4.45M USD

average cost of a data breach in 2023, 
up 15% since 2020.

Source: IBM

68%

IT leaders struggle with compliance
using legacy software.

Source: Osterman

25%

potential IT cost reduction by moving 
away from legacy systems.

Source: Gartner

The problem

Before you decide,
think beyond today’s setup.

Keeping operations steady with Subscription Edition (SE) is good. 
But preparing for what’s next keeps you ahead.

Continuity, not evolution: SE keeps your current setup running but doesn’t modernize it. You stay operational, not more interoperable, compliant, or adaptive to new mission needs.

Short lifecycle, frequent transitions: Support under the modern lifecycle policy can end with only 12 months’ notice. That means cycles of short-notice upgrades, added planning and operational overhead.

Limited flexibility for complex environments: SE remains a single-vendor, on-prem model. It doesn’t prepare you for hybrid, multi-domain, or cross-platform collaboration. Such scaling strains slow down your operations.

Rising long-term costs: The Subscription Edition moves from one-time licenses to ongoing fees. Existing licenses don’t transfer, and pricing is still unclear. It’s important to factor these changes into your planning and reassess where your budget delivers the most long-term value.

Take control of your communications stack

Look past temporary fixes. Choose a platform that keeps your operations secure,
adapts with your missions, scales across networks, and helps you comply.

Unified communications

Bring together chat, voice, video, apps and AI into a secure, sovereign platform to keep teams connected and missions protected.

Your data, your rules

Full control over where your data lives and how it moves. Deploy on-prem, cloud, or in air-gapped environments.

Data governance that works

Custom roles, granular permissions, and zero-trust principles ensure only the right people access sensitive data.

Secure by design

End-to-end encryption, comprehensive auditing, and data loss prevention and retention policies safeguard classified intel.

Integrated video calling

Initiate Pexip meeting from Rocket.Chat. Conference chats are saved, encrypted and accessible for mission continuity.

Tailored to your needs

Build custom apps and workflows with ready-to-use APIs. Adapt quickly to changing needs without waiting for vendor updates.

Trusted by European institutions

Here's what our European customers and partners say

A secure and sovereign solution that meets evolving data protection laws

"Using cloud solutions outside the EU was not an option. Security, compliance and usability were top priorities for us in choosing Rocket.Chat. It met our communication needs - secure messaging, audio and video calls, and document sharing. It checked all the security and usability boxes for us."
Integration and external collaboration has never been so easy

"When you talk about Rocket.Chat’s ability to scale, the biggest selling point is its ease-of-use. Integrating it with the other products was seamless.It’s much easier for us to work with developers from external organizations in Rocket.Chat than it has been in other collaboration platforms."
90% faster onboarding and improved cost recovery documentation

"Rocket.Chat’s message auditing capabilities have improved our record-keeping, helping us maximize FEMA funding. With detailed logs of Emergency Operations Center (EOC) actions, we can streamline and strengthen our reimbursement claims, ensuring we recover up to 75% of costs."
An Emergency Management
department of a U.S. city

Have questions? 

Here's what we often hear

What does the end of support for Skype for Business Server mean for my organization?
What are my options now that Skype for Business Server is fully retired?
Can Rocket.Chat work with Microsoft Teams and my existing Microsoft apps?
How do I evaluate the right Skype for Business Server alternative?
Is the Subscription Edition a long-term solution for on-prem users?
What steps should we follow to migrate successfully to Rocket.Chat?
Can I get a consultation to plan my move?

Go beyond continuity and level up your collaboration stack

Secure your critical communications with full data sovereignty, seamless cross-border collaboration, and complete compliance—on-premises, in sovereign EU cloud, or fully air-gapped. Trusted by European ministries, defence forces, and public agencies.