This book presents a method for identifying and classifying faults using causal reasoning. It employs a similarity matrix in order to match the user activity log and its pattern in a transformed space. It then describes how to embed the self-healing policy, so that if the client has more faults related to the previous one, they can be dealt with at the client side. The book defines supporting systems architectures and includes a case study of an autonomic healing-based self-management engine.