The heart of Ubuntu is a collection of 'deb' packages which are tested and integrated so that they work well as a set. What you consume will depend on where you are and what your interests happen to be. Release components - debs, snaps, images, containersĪ release of Ubuntu is made through several different channels. Technical phone and ticket support is only available as an add-on to an

(free for personal use on up to 5 machines). The full 10 year Ubuntu LTS lifecycle is available with an Ubuntu Pro subscription Furthermore ESM alsoĬovers 10 years of security maintenance for the Universe repository, which is not provided outside of Ubuntu Pro Subscription, and five years of Expanded Security Maintenance (ESM). The lifecycle consists of an initialįive-year standard security maintenance period, during which maintenance updates are publicly available without a Livepatching, and optional phone and ticket support, for a period of ten years. The debs in Ubuntu are categorised by whether they are considered part of the base system ('main' and 'restricted' are in the base and 'universe' and 'multiverse' are not) and whether they are open source ('main' and 'universe' are, 'restricted' and 'multiverse' are not).įor each Ubuntu LTS release, Canonical maintains the Base Packages and provides security updates, including kernel These are production-quality releases and are supported for 9 months, with sufficient time provided for users to update, but these releases do not receive the long-term commitment of LTS releases. Phone and ticket support is also available and can be optionally added on top of an Ubuntu Pro subscription, covering the same packages covered by ESM, for the same time frame.Įvery six months between LTS versions, Canonical publishes an interim release of Ubuntu, with 23.10 being the latest example. With an Ubuntu Pro subscription, you get access to Expanded Security Maintenance (ESM) covering security fixes for packages in both the ‘Main’ and ‘Universe’ repositories for 10 years. Ubuntu LTS releases receive 5 years of standard security maintenance for all packages in the ‘Main’ repository. An estimated 95% of all Ubuntu installations are LTS releases. LTS releases are the 'enterprise grade' releases of Ubuntu and are used the most.

LTS or 'Long Term Support' releases are published every two years in April. Releases of Ubuntu get a development codename ('Mantic Minotaur') and are versioned by the year and month of delivery - for example, Ubuntu 23.10 was released in October 2023. Long term support and interim releases Version numbers are YY.MM

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