This comprehensive article delves into the Business Source License (BSL), examining its origins, mechanisms, strengths, challenges, and evolution. It explores how the BSL balances proprietary protections with eventual open source release, details comparative analyses with licenses like MIT, Apache 2.0, GNU GPL, and OCTL, and discusses dual licensing benefits and legal ambiguities. Ideal for developers, enterprise stakeholders, and licensing researchers, the article offers an in-depth exploration of sustainable and fair code licensing practices.