Expression Set
An expression set allow complex math to be configured within
OmniStudio. Expression set is also known as calculation Procedure or evaluation
service.
Sometimes you need more than a simple mathematical equation, and configuring expression set enables you to run just this kind of comprehensive and detailed set of mathematical processing steps.
To handle many factors, values, and calculations, a expression set can call up one or more decision matrices. These are simply lookup tables that take a unique input or set of inputs and return an output or set of outputs. Use a decision matrix whenever you need to look up data.