Business Administration refers to the comprehensive field dedicated to the management, organization, and efficiency of a business. It encompasses various aspects including business process strategy, which deals with the planning and execution of business operations, finance, which involves the management of money and other resources, and business process reengineering, which is focused on the analysis and redesign of workflows to improve efficiency. It also includes business analysis, the practice of enabling change in an organization by defining needs and recommending solutions. Overall, it is the systematic handling of all facets of business to ensure its sustainability and growth.