mbed OS is an open-source embedded operating system designed for the "things" in the Internet of Things (IoT). mbed OS includes the features you need to develop a connected product using an ARM Cortex-M microcontroller.

mbed OS provides a platform that includes:

• Security foundations.
• Cloud management services.
• Drivers for sensors, I/O devices and connectivity.

mbed OS is modular, configurable software that you can customize it to your device and to reduce memory requirements by excluding unused software.

The Release Notes detail the current release and previous versions.

We run continuous integration on all of our branches and pull requests to verify the stability of mbed OS. The following are the Travis CI indicators for mbed OS.

• Master branch
• Latest release

You need mbed CLI to build mbed OS. For more details, read the mbed OS Handbook.

We have a Contributing and Publishing Guide in the mbed OS Handbook.