Reduce CI Costs Faster with Proven Strategies
Blog post from Harness
Continuous integration (CI) costs can significantly increase as engineering teams grow, encompassing more than just cloud expenses. These costs include infrastructure fees and productivity losses due to slow build times and developer wait time. Optimizing CI involves reducing these costs by enhancing build efficiency, minimizing compute usage, and eliminating unnecessary work without hindering development speed. Key strategies for cost reduction include test optimization, intelligent caching, right-sizing infrastructure, and implementing governance controls. Effective test optimization, such as selective test execution and test parallelization, can significantly reduce build times and improve developer productivity. Intelligent caching helps by reusing previous outputs to avoid redundant work, while using cost-effective infrastructure like spot instances and auto-scaling further reduces expenses. Governance controls, including policy enforcement and visibility through metrics, help maintain long-term cost efficiency. Teams that adopt these strategies often achieve a 50 to 75 percent reduction in CI costs while improving development speed and productivity.