A firm replaced its legacy Jenkins infrastructure with a fully automated, serverless CI/CD pipeline powered by AWS-native services.The solution streamlined deployments, reduced costs, enhanced security, and improved team productivity.Challenges included Lambda cold starts, complex IAM policies, Lambda deployment size limits, and rollback logic.The accomplishments include achieving zero-downtime rollouts, cutting deployment costs by 30%, and building a scalable, pay-as-you-go DevOps solution.