Explain trunk-based development.

The trunk-based development approach ensures software remains up-to-date by integrating small, frequent updates into the main branch or a core "trunk". As a result of its ability to streamline merging and integration phases, it can be used to achieve CI/CD and to increase the speed and efficiency of the delivery of software and the efficiency of organizations.

It is a branching model that consists of most of the work happening in a single trunk (also known as the trunk, master, or main). Each developer in the team merges their changes into the trunk on a daily basis. The reason why trunk-based development is popular is that it simplifies version control. This model minimizes merge conflicts due to the trunk's single source of truth.