Cohorts

Cohorts are created within products and are a means to group devices. Releases are created within cohorts to orchestrate the delivery of bundles to devices.

Release Graph

Within a cohort, releases form a particular type of graph, an anti-arborescence. In other words, releases may point to exactly one next release, a release may be pointed to by zero to many releases, all releases eventually converge to a single latest release.

For example:

R4-------->R5---\
                 \
R1---\            |--->R6
      |--->R2----/
R3---/

R6 above would be the latest release.

While it is possible to end up with a release graph that looks like the above, it is recommended to keep as linear of a release graph as reasonably possible because it is easier to reason about and maintain.

For example:

R1--->R2--->R3--->R4--->R5--->R6