Resumen:
Distributing software as a service (SaaS) has become a major trend for
web-based systems. However, this software distribution model poses many
challenges. One of them is feature variability, that is, some features of the
system may be required by some users, but not by all of them. In addition,
variability is more complex than just including or excluding a feature, since
different types of relationships may exist between features. The implemen
tation of this variability, and the parametrization and configuration of the
system can be complex in this context, so the development process of a
SaaS system must adequately address variability management. In this paper
we present an experience applying feature oriented software development
(FOSD) in the context of SaaS web-based systems development. We present
a real experience in the development of a web-based system for managing
homecareservices for dependent people. The article describes the problem of
variability management in this domain, and the feature model of the system.
Finally, we present an empirical evaluation of the feature model of the system
based on data obtained from its real deployment after two years of use. The
empirical evaluation was based on state-of-the-art measures for variability management, and revealed relevant insights for software development in this
context.
