How ADP Modernized Feature Delivery With Harness (105% ROI Case Study)
In this customer success story, ADP leaders share how Harness Feature Management enabled them to move faster, innovate safely, and scale to millions of daily users across MyADP and the ADP Mobile app.
🎙 Featuring:
Chris Davis, VP of Development for MyADP & ADP Mobile
Josh Steverson, Principal Engineer
Patrick Laughlin, Principal Application Developer
🔧 The Challenge
ADP relied on multiple internally built systems — different tools for mobile, web, trunk-based development, and config. This meant:
Confusing, fragmented workflows
Code deployments required for simple changes
No ability to A/B test or split traffic
Weeks-long lead times for feature flags
No easy visibility into live production configs
🚀 The Solution
ADP consolidated their tools into one standardized platform with Harness Feature Management, chosen for its:
Scalability and low-latency SDK (under 3ms response time)
Modern architecture
Ability to handle 250 TPS (800k/hr), scaling to 1,000 TPS in testing
Intuitive flag creation + async approvals
Zero late-night deploys needed
📈 The Results
✔ Cut feature-flag creation from 1–3 weeks → 1–3 days
✔ Eliminated manual meetings & confusion
✔ Reduced after-hours deployments
✔ Enabled safe experimentation & rapid iteration
✔ Achieved 105% ROI (less dev time, fewer emergencies, infra savings)
✔ Improved developer happiness and productivity
💬 Key Quotes From ADP
Chris Davis:
“Harness gives us confidence to experiment and innovate safely. Developers aren’t stuck in 10 p.m. meetings — they get to go home to their families.”
Patrick Laughlin:
“With Harness, I just create the flag. It’s instantly available. No meetings. One to three days, max.”
Josh Steverson:
“We hit 1,000 transactions per second in testing — more than double our target.”
📍 Want to Learn More?