Debian EOL, or Debian End of Life, is the point at which a given Debian release is no longer actively maintained and updated by the Debian project, meaning that it will no longer receive security updates or other forms of support.
For organizations and individuals using Debian, EOL is an important consideration as it can affect the stability and security of their systems. Debian provides long-term support for its releases, with each release typically receiving updates for several years after its initial release. However, once a release reaches its EOL, it is recommended to migrate to a newer release in order to continue receiving security updates and support.