Introduction to policies and expressions

For many Citrix ADC features, policies control how a feature evaluates data. A policy uses a logical expression, called as rule, to evaluate data, and applies one or more actions based on evaluation. Alternatively, a policy can apply a profile, which defines a complex action.

Some Citrix ADC features use default syntax policies, which provide greater capabilities than older classic policies. If you have migrated to a newer release of the Citrix ADC software and have configured classic policies for features that use default syntax policies, you have to manually migrate policies to advanced policy infrastructure.

Introduction to policies and expressions