To do cloud-native computing, you need to identify all your workloads, and, more importantly, they need the ability to identify each other, so they can work together in automated chains. To aid in this task, the Cloud Native Computing Foundation has adopted the open source SPIFFE specification, and its associated SPIRE runtime. SPIFFE provides a standard for securely identifying software components in heterogeneous IT systems and SPIRE is the engine that can make it happen (and, in this setup, CNCF’s Open Policy Agent [OPA] can enforce the authorization duties).