Exchange 2016/2019 End of Support Is Coming

By October 14, 2025, Microsoft will end support for Exchange 2016 and 2019. For organizations still operating on-premises infrastructure, this milestone presents a critical opportunity to reduce risk, modernize IT operations, and streamline compliance. 

Key considerations and how Cloudficient supports the journey: 

• Security Risks Ahead: Without future patches or updates, unsupported systems increase organizational exposure to vulnerabilities, outages, and compliance failures. 

• The High Cost of Staying On-Prem: Ongoing expenses for hardware, backups, licenses, and administration continue to rise while offering diminishing returns compared to a SaaS option.

• Three Strategic Options: While Microsoft offers a move to Exchange Online or their new Subscription Edition (to continue on-premises), Cloudficient delivers a third, more strategic option: fully managed migration of both mail and archives to the cloud, with enhanced compliance capabilities via Expireon. 

• Legacy Archives - The Common Blind Spot: Many organizations discover too late that archived data remains in legacy systems - often inherited through M&A activity or long-decommissioned platforms. SourceOne is already end-of-life, and Enterprise Vault (now owned by Arctera) has introduced significant licensing changes. Early planning avoids compliance gaps and migration delays. 

• PST Files - A Hidden Compliance Risk: Migrations frequently reveal scattered PST files across endpoints and shared drives. Cloudficient helps organizations locate, consolidate, and ingest this data into Exchange Online or Expireon for centralized control and governance. 

• More Than Mailbox Moves: Cloudficient migrates live mail to Exchange Online and legacy archives to either Exchange Online or Expireon, a modern cloud-native platform for compliance and legal retention. 

• Expireon - Built for Governance at Scale: Designed for secure, policy-based data retention, expiry, legal hold, and eDiscovery across the enterprise. 

• Tailored to Organizational Needs: Every Cloudficient engagement is customized to align with specific regulatory, operational, and IT strategies. 

• Automated, Transparent, and Compliant: Migration workflows are fully auditable, with chain-of-custody assurance and minimal user impact. 

• A Smarter Path to Modernization: Cloudficient enables organizations to move forward with clarity: retaining critical data, eliminating unnecessary risk, and gaining full visibility into their compliance landscape. 

• Next Step - A Conversation: A short discussion with Cloudficient can help clarify the best approach based on your environment, timelines, and goals. 

Cloudficient offers a comprehensive suite of solutions to facilitate a seamless transition to modern platforms like Microsoft 365. Our services encompass cloud onboarding and offboarding, legacy archive migrations, and robust information governance. With tools such as Onboarding 365 Complete, EVComplete, and PSTComplete, Cloudficient ensures efficient data migration while maintaining compliance and minimizing disruption. By leveraging Cloudficient's expertise, organizations can modernize their IT operations, enhance security, and align with evolving compliance requirements.

Cloudficient’s unrivaled, next-generation technology is revolutionizing the way businesses retire legacy systems, transform their organizations into the cloud, and capture, retain, and protect the data once it’s there. Guiding customers through every stage of the enterprise lifecycle, our comprehensive services include cloud migration, information governance, and custodian management. 

Whether you're transitioning to the cloud, ensuring data compliance, or managing electronic data for legal purposes, our expert team provides the support and solutions you need to succeed. 

Bring Cloudficiency to your enterprise lifecycle: visit our website or contact us directly.