What does the term 'scalability' refer to in network design?

The term 'scalability' in network design refers to the ability of a network to grow and adapt to increased demands or loads without sacrificing performance. This characteristic is essential for organizations anticipating changes in traffic, users, or data volume over time. A scalable network can accommodate more devices or higher data throughput by adding resources or adjusting architecture without requiring a complete redesign.

In a scalable network, administrators can implement upgrades like additional bandwidth, new hardware, or enhanced infrastructure to support growth. This ensures that service quality remains high, even as demand increases. Scalability is a crucial consideration for businesses as it directly impacts their capability to expand operations and respond to market needs efficiently.