What is the concept of scalability in a technical setting?

Remember to include a simple example within your response. Technical program managers at Facebook serve as a bridge between technology experts and business experts. This question serves as an opportunity to demonstrate your ability to explain technical concepts in a relatable and easy-to-understand way.

"Scalability represents the degree to which a system or a series of systems can handle increases in demand, users, or workload through the addition of resources. For example, if a company offers services online and their customer base grows such that the performance of their products becomes a concern, they might scale up their physical resources to add an additional data center to manage the increase in load."