Atlassian has officially announced that its Data Center products and associated Marketplace apps will reach their end of life (EOL) on March 28, 2029 at 23:59 PST. This significant change marks the next phase in Atlassian’s cloud-first strategy and has implications for organizations currently using Atlassian Data Center products. We hope this blog will help your businesses understand what this means and how to plan for the EOL.

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What Atlassian Has Announced

• All Atlassian impacted Data Center products, Marketplace apps for Data Center, and Data Center mobile apps will become read-only after March 28, 2029.
• New purchases of Data Center subscriptions and Marketplace apps by new customers will end on March 30, 2026.
• Existing Data Center customers can purchase new licenses, expand existing licenses, and buy Marketplace Data Center apps until March 30, 2028.
• Atlassian will continue to provide technical support, critical security bug fixes, and connectors to Atlassian Cloud until EOL.
• Bitbucket Data Center is treated differently: it will not fully end of life. Instead, Atlassian is offering a Bitbucket Hybrid License, allowing customers to use Bitbucket Data Center and Bitbucket Cloud together.

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Why Atlassian Is Making the Change

Atlassian says Data Center products, built over a decade ago, no longer align with the rapid pace of innovation required in the current cloud, AI, and large-scale collaboration era. Atlassian believes that cloud platforms allow for faster upgrades, unified data, better scalability, enhanced security and compliance, and tighter integration across teams and tools.

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Key Dates to Remember

Date	Event
March 30, 2026	New customers can no longer buy Data Center subscriptions or Marketplace apps.
March 30, 2028	Existing customers’ last chance to expand or renew Data Center licenses, or purchase related Marketplace apps.
March 28, 2029	Official end-of-life: Data Center products become read-only; licenses expire.

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What This Means for Organizations (Especially Large Enterprises)

• Compliance & Security: After EOL, organizations will no longer receive updates for non-critical bugs or non-security issues. Critical security patches will be delivered until the EOL date.
• Operational Risks: Running software in read-only mode means no new content or modifications; workflows that depend on write access will be affected.
• Migration Overhead: Data migration, re-training teams, moving custom integrations and apps can be a major project. Organizations will need to plan carefully.
• Cost Implications: Cloud offerings may differ in pricing, but Atlassian is offering incentives and discounts for migration. Also there are costs in moving and refactoring.

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How To Prepare: Mumo Systems’ Recommended Path Forward

1. Audit your current Atlassian footprint
   Review which Atlassian Data Center products, apps, custom integrations, and data storage you use. Identify dependencies (custom apps, plugins, integrations) that might not yet be cloud-compatible.
2. Engage with Atlassian’s migration tools and programs
   Atlassian has published detailed timelines, migration guides, and resources. Mumo Systems can help you map your migration plan, testing, and staging.
3. Evaluate cloud vs hybrid vs exception paths
   For some organizations (especially with strict security, regulatory, or data residency needs), fully public cloud may not be feasible. Consider hybrid models (e.g. Bitbucket Hybrid License), or exceptions where extended maintenance is granted.
4. Budget for migration
   Account for costs: cloud subscription fees, migration services, training, potential downtime or parallel operation, refactoring or re-platforming custom apps.
5. Pilot migrations
   Start with less critical systems to test the migration path, ensure performance, check compatibility of apps or customizations.
6. Seek external help if needed
   Solution Partners such as Mumo Systems can help with strategy, architecture, custom integrations, and ensuring security and compliance throughout.

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What Mumo Systems Offers

As an Atlassian Platinum Enterprise Solution Partner, Mumo Systems specializes in guiding companies through Atlassian migrations with minimal disruption. Here’s how we can help:

• Migration strategy and planning – Assess your current setup, map steps, estimate costs and risks.
• Custom app compatibility analysis – Identify which apps are compatible with cloud, which need refactoring, or replacement.
• Security & compliance consulting – Particularly for regulated industries or government customers.
• Cloud architecture & implementation – From setting up cloud tenancy, data residency, performance tuning, to training.
• Ongoing support & optimization – Once you migrate, ensure you’re getting full value: workflows optimized, integrations solid, users trained.

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Conclusion

The Atlassian data center end-of-life announcement sets a firm deadline: March 28, 2029. But organizations don’t have to wait. Early assessment, planning, and deliberate migration will make the transition smoother and help preserve continuity, security, and collaboration capabilities. Mumo Systems stands ready to guide your organization through this transformation, aligning your Atlassian tools with your long-term goals in the cloud era.

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FAQs

What exactly does “end of life” mean in this case?

It means that after March 28, 2029, Atlassian Data Center products and Marketplace apps for Data Center will no longer accept writes (they become read-only); technical support and bug fixes (except critical security vulnerabilities) will stop. Licenses will expire.

Can I still buy new Data Center licenses now?

Yes, if you are an existing Data Center customer. But this ends on March 30, 2028. New customers cannot purchase Data Center licenses or associated apps after March 30, 2026.

What about Bitbucket Data Center?

Bitbucket is an exception. It will not fully end of life. Atlassian is offering a Bitbucket Hybrid License so customers can use both Data Center and Cloud versions together beyond the 2029 deadline.

Will Atlassian provide extended maintenance if we can’t migrate in time?

Yes. Atlassian has indicated that for certain customers with unique or compelling requirements, they will allow extended maintenance by exception after March 28, 2029. Contact your Atlassian account executive to discuss eligibility.

What if Cloud doesn’t yet meet some of our requirements (security, compliance, data residency, etc.)?

Atlassian is investing heavily in those areas. They are building FedRAMP High and Impact Level 5 environments, adding more cloud deployment options, improving compliance, and expanding data residency. For now, explore hybrid options, or delay migration for specific components if needed. Mumo Systems can help evaluate your risk posture.

What happens to our data after the subscription expires?

You will still have access to your data in a read-only mode after expiry. However, new writes will be disabled, and you will not get updates or support. It is strongly recommended to backup or export your data and plan for long-term access.