AIX is a Unix-based operating system developed by IBM. It is designed for enterprise environments and is known for its stability, security, and scalability. AIX supports various hardware platforms, particularly IBM Power Systems, and is commonly used in data centers for running critical applications. One of the key features of AIX is its ability to manage system resources efficiently, allowing multiple users and applications to run simultaneously without performance degradation. AIX also includes advanced tools for system administration, making it easier for IT professionals to maintain and optimize their systems.