Websites with an increasing number of visitors require a scalable system, i. e. a system whose response time improves significantly if its hardware is extended. Often measures to increase reliabilty also need to be taken.
The performance of the system running the live webserver can be enhanced by adding additional processors to it.
For speeding up the export, the Template Engine can be run on a dedicated computer equipped with several processors.
A large number of personalization requests to a portal can cause high load which might lead to a performance breakdown.
When many users are working with the Content Management Server, the performance of the system might suffer.