Ubuntu 20.04 LTS, Focal Fossa, is reaching its End Of Life (EOL) in May 2025.Devices worldwide, including IoT, embedded systems, and robotics, depend on Ubuntu 20.04 LTS.Transitioning to Extended Security Maintenance (ESM) is crucial for ongoing support.ESM offers vulnerability management for critical CVEs after the standard support period ends.Migration to a supported LTS distribution like Ubuntu 24.04 is recommended.Consider Ubuntu Core for IoT, offering extended support up to 10 years.Snaps provide a streamlined way to package applications with dependencies for Ubuntu platforms.Activating ESM through Ubuntu Pro provides an additional 5 years of support for Ubuntu 20.04 EOL.ESM subscription includes security updates for over 2,300 packages in Ubuntu Main.Ubuntu Pro for Devices offers alternative pricing models for ESM based on fleet size.