LTS in Ubuntu means Long Term Support. It’s the version of Ubuntu that gets security and maintenance updates for a much longer time than regular releases, so it’s usually the safer choice for stability and servers.

What it means

Ubuntu’s LTS releases are built to stay stable, with fewer risky changes and more focus on reliability. They are supported for 5 years with standard updates, and Ubuntu also offers extended support options through Ubuntu Pro for longer coverage.

LTS vs regular Ubuntu

Type| Support length| Main focus| Best for
---|---|---|---
LTS| 5 years standard support, with optional extensions 13| Stability and security 23| Servers, work machines, long-term use
Regular release| About 9 months 13| Newer features and faster updates 13| People who want the latest software

Simple example

If you want a system that “just works” and you don’t want to upgrade every few months, LTS is the one to pick. If you want newer features sooner, a regular Ubuntu release may fit better.

TL;DR

LTS = Long Term Support, and in Ubuntu it means a more stable release with longer security updates.