The How’s & Wows of Itanium: Itanium defined a new architecture that provides a unique combination of innovative features, which overcomes the performance limitations of traditional
architectures. The IA-64 architecture is based on innovative techniques/features such as Explicit parallelism, Parallelism, and Predication and Speculation, resulting in superior Instruction Level Parallelism (ILP) and increased instructions per cycle (IPC) to address the current and future requirements of these demanding Internet, high end server, and workstation applications.

In addition, the IA-64 architecture provides headroom and scalability for continued future growth.
We take a look at all the features that make it possible, that are the bricks and mortar of the Itanium; and then we shall see the architecture that emerges.