Blink is a service by O.S. Systems that provides images for several board types from different manufacturers. This service offers images for demos, hardware tests, among others. Blink is designed for anyone who wants to get an image for their boards or companies looking for images provider solution.
These boards are designed by the SoC manufacture to provide a reference design offering a base which custom designs can be developed on top of.
These boards are all supported through a community with thousands of developers, which allow fast hands-on start, endless improvements and new feature.
Those boards are designed and supported by manufacturer's partners and are part of their ecosystem. Those are commonly used for faster prototype or even final products.