Definition:
A continually updated presentation slide deck that serves as a single, evolving reference. New slides are added at the beginning, and older slides are progressively moved to an appendix at the end of the presentation.
Explanation:
Unlike traditional slide decks, which are typically versioned, published, and then archived, an evergreen deck is continuously maintained and adjusted. This practice is common in Agile projects or rapidly changing environments, providing an ongoing historical record and enabling easy access to past decisions or discussions.
Disclaimer: As always these posts are not aimed at anyone client or employer and are just my personal observations over a lifetime of dealing with both management and frontline associates.