Epicor has announced the final on-premises Prophet 21 release: version 2028.1, scheduled for May 2028. After that, Active Support runs through June 2029 — then on-premises customers move to Sustaining Support, where no new features, AI capabilities, or platform improvements will be delivered.

You are not forced to migrate immediately. But every month you delay is a month less to plan, test, and execute a migration that protects your operation.

DESSS manages Prophet 21 cloud migrations for Texas wholesale distributors — end-to-end, with no operational disruption.

 

What the 2028 P21 Timeline Actually Means

  • May 2028 — Final on-premises feature release (version 2028.1)
  • June 30, 2029 — Active Support ends (security patches, critical fixes)
  • July 1, 2029 onward — Sustaining Support only: no new features, no new modules, no AI capabilities

Your system won't stop working. But it will stop improving — and support will become progressively more limited. For distributors in regulated sectors or those dependent on ongoing compliance updates, the risk of staying on-premises grows every year after 2028.

What DESSS P21 Cloud Migration Covers

Environment Assessment

We document your current P21 environment — version, customizations, integrations, data architecture, printing workflows, and user configurations — and produce a migration readiness report before any transition work begins.

Customization Preservation

DynaChange customizations, user-defined fields, custom menus, validation rules, approval workflows, and business rules — audited, documented, and migrated or rebuilt for the cloud environment.

Data Integrity Validation

Pre-migration data quality assessment and cleanup — deduplication, stale record archival, pricing validation, and open transaction reconciliation — so your cloud environment starts clean.

Azure Infrastructure Readiness

Prophet 21 cloud runs on Microsoft Azure. We assess your network, identity, print infrastructure, and integration layers for cloud readiness — and resolve issues before migration day.

Integration Re-certification

EDI connections, eCommerce integrations, shipping carrier links, and third-party system integrations are tested and validated against the cloud environment before go-live.

Post-Migration Stabilization

Dedicated hypercare support for 30–60 days post-migration — resolving issues, optimizing performance, and ensuring your operation runs as well on cloud as it did on-premises.

Why Start Planning Now

Comprehensive P21 cloud migrations require 6 to 18 months, depending on the environment's complexity, integration scope, and customization depth. Distributors who wait until 2027 will be competing for consulting capacity in a constrained market. Starting in 2025 or 2026 means you migrate on your timeline — not under deadline pressure.

 

Running On-Premises Prophet 21? Your Migration Window Is Open.

DESSS offers a no-obligation P21 cloud migration assessment — covering your environment, customization inventory, integration complexity, and realistic timeline. Know what the migration will require before you commit.

Schedule Your Prophet 21 Migration Assessment

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