An indexed and searchable centralized log is one of those tools that once you've had it you'll wonder how you managed without it. I've experienced a couple of advantages to using a central log - debugging, monitoring performance, and catching unknown problems. Debugging Debugging becomes easier because instead of poking around grepping text logs on servers you're able to use a GUI to contrast and compare values between different time ranges. A ticket will often include sparse information about the problem and observed error, but if you know more or less when a problem occurred then you can check the logs of all your systems at that time. Problem behaviour in your application can occur as a result of the services you depend on. A database fault will produce errors in your application, for example. If you log your database errors and your application errors in the same central platform then it's much more convenient to compare behaviour between...