Bladed system architectures enable equipment providers to produce high-density, modular equipment that can be easily scaled to match user needs. The inherent flexibility and scalability of a bladed architecture supports the expansion or reconfiguration of existing server, storage and telecommunications infrastructure, and supports the rapidly growing and shifting services demand.

This high level of scalability is achieved by disaggregating computing and scarce system I/O resources. However, it poses a significant challenge: the system needs an equally scalable interconnect architecture that enables any and all root complexes to communicate both with each other and with any and all endpoints.