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; first evaluating, at the processing engine using a first rule block, at least some of the data, wherein the first evaluating comprises making a determination about a content of one or more fields of the at least some of the data; first determining, from the first evaluating, that a result is one of at least first and second outcomes; depending upon the first determining, second evaluating, at the processing engine using a second rule block, at least some of the data, wherein the second evaluating comprises making a determination about a content of one or more fields of the at least some of the data, and wherein a content of one of the fields in the first evaluating matches a content of one of the fields in the second evaluating; and second determining, from the second evaluating, whether a result is one of at least first and second outcomes, wherein the results are analyzed to determine an event of interest.