The document discusses different tools for monitoring application, network, and infrastructure topologies in an enterprise environment. It recommends tools that can monitor across all three silos and provide out-of-the-box support for most enterprise stacks, both on-premises and in the public cloud. Boundary, AppFirst, LogicMonitor, ScienceLogic, and DataDog are highlighted as tools that meet these criteria. Key selection factors include integration coverage, ease of use, cost, and example enterprise customers.