Description: Engagement refers to the level of interaction and participation of users with a system or service. This concept is fundamental in various areas of technology, as a high level of engagement indicates that users are not only using the system but also actively interacting with it, which can translate into greater satisfaction and loyalty. In the context of explainable artificial intelligence, engagement can influence user trust in the decisions made by the system. In e-commerce, high engagement can result in higher conversion rates and sales. Agile methodologies, such as Scrum and Kanban, promote team engagement by involving all members in the development process. In user experience, engagement is measured through metrics such as time spent and frequency of use. In marketing, high engagement can be a key indicator of the success of a campaign. In summary, engagement is a critical indicator of the effectiveness and acceptance of systems or services, and its measurement is essential for continuous improvement and innovation.