1. A method, comprising: tracking, by a processor, a plurality of service level agreement (SLA) policies and service level definition (SLD) policies applied to a request message of a correlated request/response message pair, comprising: building a symmetric policy enforcement context structure during a request message policy enforcement flow of the request message that identifies each enforced SLA policy, each enforced SLD policy, and any enforced policy alternatives executed in association with each enforced SLA policy and enforced SLD policy; and storing the symmetric policy enforcement context structure within a memory; and where the method further comprises: detecting a response message of the correlated request/response message pair; identifying, using the tracked plurality of SLA policies and SLD policies applied to the request message, a corresponding plurality of platform-specific policy enforcement processing rules used to enforce the plurality of SLA policies and SLD policies on the response message; and enforcing the plurality of SLA policies and SLD policies on the response message using the identified corresponding plurality of platform-specific policy enforcement processing rules.