Parallel Execution in Modern CI: Best Practices & Results | Harness Blog
Definition: Parallel execution in CI is the practice of running independent build, test, or deployment tasks concurrently to reduce feedback time, improve resource utilization, and control infrastructure costs. Developers often spend almost half their time waiting for builds that could be faster. Simply adding more resources is not enough. Real improvements come from planned parallelism, using concurrency together with test intelligence, caching, and strong governance.