POSIX (Portable Operating System Interface) is an IEEE industry API standard for OS compatibility. The SimpleLink™ software development kits (SDKs) has both TI-RTOS and FreeRTOS support, however it also offers POSIX support on top of either of these RTOS's. This allows applications to be independent of the underlying RTOS. This workshop provides a simple introduction to using POSIX with the SimpleLink SDK. You will use TI Resource Explorer, the SimpleLink SDK, and CCS Cloud to modify a project and run it on a SimpleLink LaunchPad™ Development Kit. The goal for this project is to familiarize you with some POSIX APIs and concepts typically used in multithreaded applications. This training is delivered as part of SimpleLink™ Academy in TI Resource Explorer, a collection of curated training modules developed by TI subject matter experts to help developers get up and running as quickly as possible.