How is "scalability" defined in relation to Pega applications?

In relation to Pega applications, scalability is defined as the ability to manage increased workload without performance loss. This concept is crucial for applications that need to handle varying amounts of data processing, user interactions, or transactions as the demands on the system grow.

As businesses expand or their operational requirements change, it is vital that their software applications can accommodate these changes seamlessly. Scalability ensures that regardless of how much load is placed on the system—such as a surge in user traffic or increased data processing demands—the application continues to perform effectively without degradation in speed or responsiveness. This ability to scale dynamically supports both current and future business needs, making scalability a key factor in the design and architecture of Pega applications.

The other options, while related to software capabilities, do not specifically encapsulate the essence of scalability. Enhancing functionality pertains to adding new features rather than increasing capacity, application size limitation focuses on constraints rather than adaptability, and modifying existing applications speaks to flexibility but does not directly address how applications handle growth in workload.