Regression automation at scale

Quality Assurance CoE

92–93% reduction in execution cycle time

Business problem

A widely deployed product served customers globally with customized configurations. Every upgrade required certification of the base release and customer-specific variants. Manual regression consumed most of the cycle and slowed go-to-market.

Engagement context

  • Average cases per cycle: 1,862
  • Functional resources per cycle: 5
  • Average duration: 5 days (~200 hours)
  • Execution rate: ~9.2 tests per hour
  • Full regression suite: 3,672 cases

Solution implemented

Phase 1 — Core regression automation

Automation feasibility on the core regression set; 1,237 manual cases automated over a three-month initiative with six dedicated resources (~3,168 hours).

Phase 2 — Full regression automation

Extended automation across the full 3,672-case suite over seven months with the same team scale (~7,392 hours).

Outcomes

  • More than 92% reduction in execution cycle time on the core regression initiative
  • Approximately 93% reduction in turnaround time on the full regression suite
  • Faster release certification with maintained coverage discipline

Structured feasibility, phased automation, and suite governance turned regression from a bottleneck into a predictable gate.

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