Which of the following is designed to verify and authenticate individuals taking part in a data exchange within an enterprise?

SOA (Service-Oriented Architecture) is a software design paradigm for structuring application services and does not perform identity verification or authentication.

Single Sign-On simplifies access by allowing one set of credentials to authenticate across multiple systems but does not inherently verify or authenticate identities during a data exchange using cryptographic certificates.

PKI uses asymmetric cryptography and a chain of trust anchored by Certificate Authorities (CAs) to issue digital certificates that bind a public key to a verified identity. When two parties exchange data, their certificates allow each side to authenticate the other's identity cryptographically before and during the exchange. This makes PKI the purpose-built solution for identity verification and authentication within enterprise communication and data exchange scenarios.

Biometrics authenticates a physical person at a local device using biological traits but is not designed to verify and authenticate parties participating in a networked enterprise data exchange.