The "Z-Series" refers to a line of products or models that typically denote a specific category within a brand, often associated with high performance or advanced features. For example, in the context of automobiles, the Z-Series may include sporty vehicles designed for speed and agility, while in electronics, it could refer to high-end gadgets with cutting-edge technology. In the realm of computing, the Z-Series can also refer to a family of mainframe computers developed by IBM. These systems are known for their reliability, scalability, and security, making them suitable for large enterprises that require robust data processing capabilities.