mbed is a solution for embedded application development advocated by ARM. Because of the high level of abstraction, it has the advantage of being relatively easy to divert software assets across microcomputer vendors.
Development can be done with a board compatible with mbed and free cloud-based tools. (About Silicon Labs mbed support)
There are already more than 100,000 users on the WW, and it is a solution that will attract attention in the future.