This document presents a framework for analyzing knowledge intensity in services from both a customer and provider perspective. It argues that while prior research has focused only on certain "knowledge-intensive business services", all services require some level of knowledge sharing and creation. The framework conceptualizes services as problems to be solved through knowledge processes involving customers and providers. It explores how services vary in the level of customer knowledge required and nature of the provider's problem-solving process. This leads to implications for understanding competitive advantages across different types of services businesses.