In the past application management was alot simpler than today. An application was many lines of code within one application and the code ran all on the same server. Also back then an application developed for the business was built for a single specific purpose.

In alot of IT departments today services from a single application are shared with serveral applications which makes it difficult infrastructuaraly to identify. Addtionally, changes are made to the overall funtionality of an application or changes to fit evolving business processes.

To manage these applications correctly, "composite applications" require deep-dive monitoring and automation. Also to proactivly manage these applications, visibility is needed to understand events distributed across the infrastructure. Lastly it makes sense to correlate these events that happen on different servers. This will help pin-point the problem for automation as well as give the operator correct guidence to fix the error and develop a solution.