Case Studies / Enterprise Technology
CI/CD Migration • Enterprise Technology
Enterprise CI/CD Migration: Racing Against End-of-Life
How we executed an enterprise-scale CI/CD platform migration under a hard end-of-life deadline — migrating 800 pipelines five months ahead of schedule with zero downtime across the organization.
An end-of-life deadline for a business-critical CI/CD platform
Our client's CI/CD platform was approaching a hard end-of-life deadline, putting hundreds of active build and deployment pipelines at risk. With engineering teams depending on the platform daily, any migration plan had to guarantee continuity while replatforming at scale.
Key pain points included:
- A hard vendor end-of-life deadline for the existing CI/CD platform
- 800 active pipelines spanning multiple teams and application stacks
- Zero tolerance for build or deployment downtime during the transition
- The need to fully transfer operational knowledge to the internal team
A phased migration built for zero downtime
We ran the migration as a structured, phased program — validating each batch of pipelines before cutover, so daily delivery was never at risk.
Migration Planning & Sequencing
Audited and grouped the full pipeline inventory by dependency and risk, sequencing the 800-pipeline migration to protect the teams with the tightest delivery timelines first.
Parallel Pipeline Validation
Stood up and validated each migrated pipeline in parallel with the legacy version before cutover, confirming equivalent build and deployment behavior at every step.
Zero-Downtime Cutover Process
Executed cutovers in small, reversible batches with rollback paths defined in advance, keeping build and deployment availability at 100% throughout the migration.
Knowledge Transfer & Enablement
Documented the new platform end-to-end and trained the internal team on operating it independently, achieving full self-sufficiency ahead of project close.
Five months, ahead of a hard deadline
Discovery & Migration Planning
Catalogued all 800 pipelines, mapped dependencies, and built the phased migration sequence against the end-of-life deadline.
Batch Migration & Validation
Migrated pipelines in validated batches, confirming equivalent behavior before each cutover.
Full Cutover
Completed the remaining pipeline migrations with zero downtime, five months ahead of the original schedule.
Knowledge Transfer
Transferred full operational ownership to the internal engineering team.
Ahead of deadline, with zero downtime
The migration met every constraint that mattered most — timeline, continuity, and long-term ownership:
Delivery Continuity
- Zero pipeline downtime across the migration
- 800 pipelines successfully migrated
- No disruption to active development teams
Program Outcomes
- Beat the end-of-life deadline by 5 months
- 100% of operational knowledge transferred
- Team fully self-sufficient on the new platform
Racing against a hard vendor deadline, the team avoided any disruption to daily delivery while completing the migration well ahead of schedule — and left the client fully equipped to operate the new platform independently.
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