Decomposition is an analysis technique that breaks down a complex system, process, or problem into smaller and simpler components. It helps to identify the tasks, activities, functions, features, and requirements that are necessary to implement the deliverable. Decomposition also helps to organize, structure, and prioritize the components based on their dependencies and relationships. Organization, dependency, and interface are not analysis techniques, but rather aspects or results of decomposition .Reference: PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline, page 10; Business Analysis for Practitioners: A Practice Guide, page 131-132