The Sentry project has undergone a significant change in its licensing decision after over a decade. The company initially used the BSD 3-Clause License but later decided to re-license, primarily to standardize on an open-source license across all projects and ensure protection for the developers' livelihoods. The new licensing arrangement aims to strike a balance between allowing users to freely modify and deploy Sentry while protecting the company's intellectual property from competitors who might sell their work. The Business Source License (BSL) has been adopted, which includes a grant restriction that prevents commercial use of the service but converts to an Apache-2.0 license after 36 months. This change is intended to address concerns about open-source companies being plagiarized or copied by businesses seeking to compete with them, and it will ensure the future of Sentry's development while maintaining its open-source nature.