Chapter 2 GatherinG requirements There are other NFRs also, like serviceability, security, regulatory, environmental, data integrity, usability, interoperability, etc., but RAM (reliability, availability, and maintainability) is most pertinent to a DXP. These requirements help to understand the operations of the system rather than specific behavior. Consider a scenario where you have created a web application to have an eye- catching and adaptive UI design. But what if it is not able to handle appropriate traffic? A digital experience platform ensures that balance between utility of the service (functionality) delivered and warranty, that is, whether it is fit for use. The perfect balance between functionality and its use creates maximum value to customer. Scalability Requirements Scalability requirements ensure maximum operating capacity of an application and determine whether the current infrastructure is sufficient to run the application. This provides a holistic view of the number of concurrent users that an application can support, and ensures scalability so that application can support and allow more users to access than its current operating capacity. It is necessary to look into the scalability requirements, as mentioned in the scalability user story in Table 2-8. Table 2-8. Scalability User Story Name Scalability trigger the DXp application should be scalable and load should be distributed across geographical locations. script as a product owner, the DXp application will support 10,000 concurrent users per hour and 1,000,000 transactions per hour. the application should be robust so that it will be able to handle a heavy request load. Geographical load should be distributed across locations so that the application will be available across all geographical locations. acceptance the DXp application is able to support 10,000 concurrent users with 1,000,000 criteria transactions per hour across all geographical locations. 44