Continuous Integration and Continuous Deployment (CI/CD) pipelines are essential for modern engineering teams as they automate software building, testing, and deployment, freeing engineers to focus on innovation rather than manual tasks. However, these pipelines can become costly due to the need for infrastructure support. Spot Instances, offered by cloud providers like AWS, GCP, and Azure, present a cost-effective solution by utilizing spare compute capacity at a significantly lower price, albeit with the risk of sudden termination. While using Spot Instances can lead to substantial savings—up to 90% in some cases—they require careful management to mitigate the risks of interruptions and availability issues. Gradually increasing Spot Instance usage and maintaining a balance with non-Spot capacity can optimize costs without compromising operational efficiency. Alternatives like Reserved Instances and AWS Savings Plans offer other avenues for cost reduction, though they come with different constraints. Successfully implementing these strategies, as demonstrated by companies like Rippling, involves understanding cloud provider pricing models and ensuring infrastructure resilience.