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EdgeX Short Term Support (STS)
STS is provided for with each release (typically a release is made every 6 months). Work group chairpersons determine which issues (critical, high, medium or low) in the latest release must be addressed (in consultation with the release czar and with approval of the TSC) and may release a minor or patch release to address issues for that release before the next release. Once a new release is made, the old release STS (for any release that is not designated as an LTS release) ends and no further work / support is made on the old releasereleases are supported for the duration of the next development cycle (~6 months). Support for an STS release ends once the next release occurs. Working group chairs are responsible for escalating issues that might trigger a Core patch release to the release czar and TSC. Timing of patch releases to resolve such issues will be coordinated by the release czar and the TSC. Patch releases of application/device SDKs and services are the responsibility of the working group chairs and the release czar (i.e. they don't require TSC approval).
EdgeX LTS
The TSC officially designates a release for LTS based on the needs of the community and the stability of the release. At the point of an LTS designated release, the TSC will define the support period for that release (typically 24 months but may be adjusted by the TSC). At least six months prior to the end of the LTS term, the TSC will meet and determine whether the support for an LTS release will be extended. Support may be extended, for example, in order to provide sufficient overlap with an anticipated new LTS release to allow adopters to transition.
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