Introduction

Scalability refers to the ability of a system, network, or application to handle a growing amount of work or its potential to expand to accommodate that growth. In technology, scalability is critical as it ensures that software, infrastructure, or processes can meet increasing demand without compromising performance or efficiency.

A scalable system is designed to grow in terms of capacity and performance as needed, whether by adding more resources (horizontal scaling) or enhancing existing resources (vertical scaling). Scalability is especially important in areas like cloud computing, web services, and enterprise applications, where demand can fluctuate. The ability to scale effectively helps organizations maintain stability, optimize costs, and deliver a smooth user experience even as they grow.

Key aspects of scalability include the ability to handle more users, data, or requests while maintaining system reliability and performance.

Sources:

• "Designing Data-Intensive Applications" by Martin Kleppmann

• "The Art of Scalability" by Martin L. Abbott and Michael T. Fisher

• "Scalability Rules: 50 Principles for Scaling Web Sites" by Martin L. Abbott and Michael T. Fisher