472 WebSphere and .NET Coexistence
11.1 Scalability
Scalability refers to the capability of a system to adapt readily to a greater or
lesser intensity of use, volume, or demand while still meeting business
objectives. It is related to other QoS since applying appropriate scaling
techniques can greatly improve availability and performance. For example,
scalability should be considered carefully, otherwise some performance
bottlenecks may develop. Scaling techniques are especially useful in multi-tier
architectures when you evaluate components associated with the edge servers,
the Web presentation servers, the Web application servers, and the data and
transaction servers.
On demand computing requires the ability to scale up or scale down an ...