Doing more in less time. Sometimes changes need to be effected with a short time to market, applications need to be adapted to user wishes or changes in the market have to be anticipated; in all these cases, the IT department is given less and less time to implement changes and must therefore work more flexibly. And as if that were not enough, the availability of systems is becoming ever more important. Taking an entire application landscape off-line for a few hours for maintenance is unacceptable these days. Web-scale Architecture (WSA) allows an organization to use agile methods to build systems which offer a high degree of availability and flexibility and which support a working method that incorporates continuous delivery.