DistroWatch published a review on openSUSE MicroOS.
openSUSE's MicroOS
The openSUSE project is probably best known for its two main branches: Leap and Tumbleweed. Leap is a fixed release distribution which shares code with SUSE Linux Enterprise while Tumbleweed is a rolling release platform. Apart from this difference in update policy (fixed versus rolling), the two editions are mostly similar. They use the same system administration tools, support the same desktops, and use the same package manager.
Were you to just glance at the openSUSE website you might believe there are just these two editions of the distribution. However, if you poke around in the project's wiki enough you'll find another edition called MicroOS.
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