components that a service is delivered over and so cannot tell if SLAs for QoS in 

components in the delivery chain are being met. 

QoS mechanisms offer little indication as to how a service is performing from the 

end user perspective.  

End user performance is the ultimate indication of overall service performance but 

the Service Provider has no way of getting this information to diagnose problems in 

service delivery. 

Traditional SLAs that define overall service performance, do not contain meaningful 

parameters to specify how a service should perform from the end user perspective. 

3.2.2 Objectives 

The primary objective of this dissertation is to develop a framework that can support QoS 

monitoring and Service Level Agreements for Web delivered Services. This has three 

sections to it. 

To design a client side proxy that supports automatic configuration, monitoring and 

logging of availability and performance parameters as perceived by the end user of 

Web delivered services  

The design of a SLA template specifically for Web delivered services that will map 

these parameters captured by the proxy in a meaningful way so that it is possible to 

specify how a service delivered over HTTP should perform, from the end user 

perspective 

To implement SLA verification and feedback to the Service Provider and Customer 

so as to notify them of SLA compliance. 

Based on the objectives above the requirements can be broken into 3 main sections: 

1. Client side component to support logging of appropriate availability and performance 

parameters  

2. Design a suitable SLA for Web delivered services 

3. SLA verification and feedback to the Service Provider and Customer