That's the beauty of APM is you don't need to deal with logging to get performance data. APM tools instrument the applications themselves regardless of what the code does (logging, generating metrics, etc). AppDynamics can collect log data, and provide similar capabilities to what a log analytics tool can do, but it's of less value than the transaction tracing and instrumentation you get. Your application has to be built in a supported language (Java, .NET, PHP, Python, C++, Node.js) and if it's web or mobile based you can also collect client side performance data and unify between both frontend and backend. If you have questions just reach out and I can answer them for you. Good luck!