Storing Build Artifacts in AWS S3 and Nexus Repository Manager via Jenkins

After Jenkins builds your Java application and produces a WAR file, that artifact needs to go somewhere safe and retrievable. Leaving it in the Jenkins workspace is not a real option, workspaces get cleaned, servers get terminated, and builds get replaced. Every time a new build runs, the previous artifact is overwritten. This post covers two artifact storage options: AWS S3 (simple, cloud-native) and Nexus Repository Manager (enterprise-grade, self-hosted). Both integrate with Jenkins, and understanding both gives you flexibility to use whichever fits your project's needs.