Google Knol (a “knol” is a unit of knowledge in Google’s terms) is a bit like Wikipedia. You can post articles, but the difference is it is clear who the author is. My colleague Mark Conway and I recently posted an article on the definition of EPM. You can check his article out here.
The article discusses the various definitions of EPM, what components an EPM system consists of, an overview of EPM methodologies, suggested reading, etc. Here’s a paragraph from the article, to give you an idea:
The term Performance Management is not very well defined. Different disciplines have a different understanding. For instance, in the field of HR it means managing employee performance 1 and in IT networks performance management means optimizing the performance of IT systems and networks2. When performance management refers to organizational development, many different terms are used, amongst which Corporate Performance Management 3, Business Performance Management, Strategic Performance Management4 or Integrated Performance Management 5. Performance management is closely connected to the term performance measurement. They are sometimes mistaken for each other. In careful usage, Performance Management is the larger domain and includes Performance Measurement. Here we use the term Enterprise Performance Management (EPM). Some try to define the differences between these terms. In an article in BPM Magazine (12/08), David Giannetto, the author of “The Performance Power Grid” and a professor at Rutgers University made the distinction: “BPM is usually considered to be an approach that solves operational problems through better information, whereas CPM is often used to refer to the solution of problems that revolve around financial information. Meanwhile, EPM tends to be seen as the unification of operational and financial information to solve problems with a holistic approach.”