Session-Based Test Management (SBTM) is a methodology used in Agile development that combines exploratory testing with accountability to enhance defect discovery, creative test design, and management control. This approach involves creating specific test missions, conducting uninterrupted testing sessions typically lasting 60 to 120 minutes, and recording results followed by debriefing to refine future sessions. Developed by Jonathan and James Bach in 2000, SBTM is flexible enough to be applied to both small and large Agile projects, allowing teams to understand requirements and functionalities by integrating exploratory testing into their processes. The method emphasizes collaboration, often pairing testers or testers with developers, and encourages thorough documentation of session details to inform future testing and development. David Tzemach, founder of the Agile Quality Made Easy blog, supports using SBTM for its ability to provide insights and improve software quality through structured, yet adaptable testing practices.