PCI-SIG^® is comprised of multiple technical work groups (TWGs) that work towards the development of PCI Express^® (PCIe^®) technology. Work groups are open to all PCI-SIG member company representatives and allow companies to further the PCIe specifications.

Many online resources cover the history and current state of industry development for the concept that, in Integrity and Data Encryption (IDE), we refer to as a Trusted Execution Environment (TEE).