Scalability is the capacity of a system, process, or model to handle a growing amount of work or its potential to expand to accommodate that growth. Coursera's scalability catalogue equips you with an understanding of how to scale systems to meet increasing demand effectively and efficiently. You'll learn about design principles for achieving scalability, including load balancing, caching, data sharding, and microservices. You will also explore scaling strategies such as vertical and horizontal scaling and delve into the complexities of managing and maintaining scalable systems in various contexts, whether it's enhancing software performance, expanding a business, or optimizing data processing tasks.