In the last recent years a new technology called Web Services has emerged. The main
characteristic of a web service is that it is a piece of software that the user can utilize but
doesn’t own, that is, the user doesn’t install the software but uses it through the internet and
standard protocols.
With this new technology, a new architecture paradigm called SOA (Service Oriented
Architecture) has appeared. This architecture is based on combining several web services, each
one responsible to develop a concrete task, in order to obtain full‐operational software.
The web services that compose a SOA System might be able to perform a task in a certain
time, might be unavailable in some cases, might have security policies, etc. All this attributes,
named Quality attributes, are essential in order to choose the appropriate web service for a SOA
System.
The objective of this Master Thesis is focused on two different but related subjects: (1) The
development of a review regarding to the Quality Attributes for web services in a systematic
manner and the development of a tool for monitoring SOA Systems capable to be used in
several frameworks such as for Self‐Adaptive SOA Systems and for Web Service Discovery
Systems
