Business process mapping is a framework that creates visual representations of business processes through diagrams and flowcharts. These maps reveal the relationships between operational steps, inputs, and outputs to produce products or services. Process mapping is useful for documenting current processes, analyzing them for improvements, facilitating common understanding, and capturing institutional knowledge. There are different types of process maps that can be used at various levels, including SIPOC maps, deployment maps, swimlane maps, value stream maps, and BPMN (Business Process Model and Notation) maps. The main advantages are process transparency, improvement identification, knowledge retention, and training support, while disadvantages include lack of clarity and inconsistent methodology.