Introduction Instrumentation, the process of auditing and logging in your applications, is a vital part of any enterprise solution. When you are developing applications with Service Level Agreements and specific Auditing requirements, logging is a big deal. Add in the complexity of the decoupled nature of the cloud with Service Orientated Architecture, piecing together a clear view of a business process from end to end can be a challenge. Microsoft has recently released the Semantic Logging Application Block ( SLAB ) to the enterprise library. This article will form the first part of a mini-series, detailing the benefits, pitfalls and examples of how to make use of it in your enterprise. Although new to the Enterprise Library, Semantic logging is not a new concept. It has been adopted for years under different names such as "structured logging", "strongly typed logging" and "schematised logging" to name a few. What is it? SLAB inherits event