A system is a collection of interconnected components that work together to achieve a specific goal or function. These components can include people, processes, tools, and information. Systems can be found in various contexts, such as biological systems in nature, computer systems in technology, and social systems in communities. Systems can be classified into two main types: open and closed. An open system interacts with its environment, exchanging information and resources, while a closed system operates independently, with minimal interaction. Understanding how systems function helps in analyzing and improving their efficiency and effectiveness in various fields.