ChromeOS Update Channels
ChromeOS has several update channels available to allow advanced users and developers to test their projects on different versions of ChromeOS. By default, all ChromeOS devices are shipped in the "Stable" channel. It is recommended that you keep your device on the "Stable" channel if you are using it for production workloads.
It is important to note that if you wish to revert to the stable channel after moving to the Beta, Developer or Canary Channel, you will need to do a powerwash of your device. Furthermore, you should ensure that you keep regular backups of your device if you choose to switch to a non-stable channel.
Stable Channel
The ChromeOS Stable Channel is the default channel that ChromeOS devices are shipped with. Stable builds undergo a significant amount of testing for both stability and security issues before they are pushed out to devices. You should always use Stable Channel if you are using your device in a high-security environment or you need reliablily.
If you are using a ChromeOS device that belongs to a school or employer, it is possible that the administrator can force your device to remain on the stable channel at all times.
Beta Channel
The ChromeOS Beta Channel allows users to test their projects against the next release of ChromeOS. Beta builds are largely complete and are generally considered stable however stability is not guaranteed as software bugs are sometimes discovered in the testing of beta builds of ChromeOS. If you are using a beta build of ChromeOS, it is recommended that you maintain regular backups of your device in the unlikely event that you have to switch to a stable channel in the future.
Development Channel
The ChromeOS Development Channel allows advanced users to test their projects against a future experimental release of ChromeOS. The Development Channel often has several features that are in development that are not present in stable releases of ChromeOS. This is excellent for users who wish to experiment with these unreleased features. Development builds are generally considered stable and may be prone to unexpected crashes and occasionally security issues. If you are using a development build of ChromeOS, it is recommended that you maintain regular backups of your device in the likely event that you have to switch to a stable channel in the future.