Industry sectors are broad categories that group businesses and organizations based on their primary activities. Common sectors include manufacturing, services, agriculture, and technology. Each sector plays a vital role in the economy, contributing to job creation and the production of goods and services. Within these sectors, there are further subdivisions known as industry sub-sectors. For example, the technology sector can be divided into software development, hardware manufacturing, and information technology services. Understanding these sectors helps in analyzing economic trends and making informed business decisions.