Intel Smart Sound Technology (SST) BUS is a driver and software package used for enabling and managing audio capabilities on systems that use Intel's integrated audio solutions. Specifically, it provides support for Intel Smart Sound Technology (SST), which is a low-power audio solution found in many Intel chipsets. This technology is commonly used in modern laptops and desktops with Intel processors, providing features such as improved audio quality, lower power consumption, and support for voice assistant services (e.g., Cortana, Alexa).

The Intel Smart Sound Technology BUS driver is essential for enabling communication between the Intel SST hardware (typically embedded in the Intel chipset or audio controller) and the Windows operating system. It allows Windows to recognize and use the Intel Smart Sound Technology for audio output, voice recognition, and other multimedia tasks.