Our loan platform's Java build took 30 minutes. Releases crawled out once a month. Every deploy felt like a ceremony — long, stressful, and something everyone dreaded.
We introduced Go DDD aggregates, modular builds, and parallel test runners. Deploy time plunged to 9 minutes, and engineers shipped value every week instead of agonising over a monthly big-bang release.
Efficiency isn't just faster code — it's lighter hearts in every retrospective. When deploying stops being scary, people ship more often, in smaller chunks, with fewer surprises. That's the real win.