The commerce runtime is the live operational environment where a commerce platform processes requests and runs business logic. It handles core functions such as pricing, cart updates, checkout, authentication, catalog access, and calls to internal services or extensions. In practical terms, it is the part of the system that turns user actions and API calls into business outcomes.
This layer matters because it sits close to sensitive data and high-value workflows. If attackers can reach a flaw in the commerce runtime, they may be able to execute code, alter transactions, steal data, or pivot into internal components. Defenders focus on reducing exposure, patching quickly, limiting unnecessary extensions, and monitoring for unusual processes, outbound connections, or request patterns that suggest abuse of the runtime.