System integration in technology aims to unify various subsystems and components into a single, cohesive system that functions efficiently. The primary purpose is to improve communication and data sharing between different software and hardware systems, which enhances overall performance and productivity. By integrating systems, organizations can streamline processes, reduce redundancy, and ensure that data flows seamlessly across platforms. This is critical for operational efficiency, allowing for automation and real-time analytics, which ultimately supports better decision-making.