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; first determining, from the first evaluating, whether a result is one of at least first and second outcomes; and depending upon the determining, second evaluating, at the processing engine using a second rule block, at least some of the data; 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.