Network design is the process of planning and implementing a computer network infrastructure that meets the requirements of an organization. This includes determining the type of network topology, hardware and software components, security measures, and connectivity options needed to support the organization's operations. Network design involves analyzing current network performance, identifying potential bottlenecks or areas for improvement, and then developing a comprehensive plan to address these issues. This may involve designing a new network from scratch, upgrading an existing network, or integrating new technologies into an existing infrastructure. Key considerations in network design include scalability, reliability, security, and performance. A well-designed network should be able to accommodate current and future needs, be resilient to failures, protect against security threats, and provide efficient data transfer speeds. Overall, network design is a critical aspect of information technology infrastructure planning and plays a key role in ensuring that organizations can effectively communicate, collaborate, and access resources in today's digital world.