1. A method for use in monitoring one or more platforms of one or more data systems, comprising: receiving, at a processing engine, structured data generated by one or more platforms over at least one communications network; and analyzing, at the processing engine using a first rule block, at least some of the data, wherein the analyzing includes: identifying, at the processing engine, a first portion of the structured data; evaluating, using at least a first expression, the first portion of the structured data in view of reference data to determine whether a result is one of at least first and second outcomes; and evaluating the result to determine an event of interest.