SLSA, or Supply chain Levels for Software Artifacts, is a security framework designed to protect the integrity and provenance of software supply chains. Developed by the open-source community, SLSA provides a set of progressive levels (from 1 to 4) that organizations can follow to secure their software build and delivery processes. Each level adds stricter requirements, such as source code provenance, build reproducibility, and automated, auditable build environments. By adopting SLSA, organizations can reduce the risk of tampering, unauthorized code changes, and supply chain attacks. SLSA is widely recommended for ensuring trustworthy software releases and is compatible with various development environments and CI/CD pipelines.