The concept of "software quality" is often hard to capture for an organization. Quality models aim at making the concept more operational by refining the "quality" of software development products and processes into sub-concepts down to the level of concrete metrics and indicators. In practice, it is difficult for an organization to come up with a reliable quality model because quality depends on numerous organizational context factors, and the model as well as the metrics and indicators need to be tailored to the specifics of the organization. This paper presents experiences in developing custom-tailored quality models for an organization, exemplified by Ecopetrol, a Colombian oil and gas company. The general approach taken is illustrated and excerpts from the initial model are presented.

Wireless Internet services such as mobile Web applications promise an enormous market potential. The field is characterized by extreme time-to-market pressure and insufficient knowledge about development procedures and technical constraints. This results in insufficient guidance for project managers and software developers on selecting appropriate development processes, techniques, methods, and tools. In addition, there is an enormous lack of knowledge about the effects (such as effort consumption, defect injection) of such technologies that hinders the transfer of innovative technologies into practice. This article describes an initial reference process by summarizing essential technologies for the development of wireless Internet services and experience with these technologies on the levels of life cycle processes, engineering processes, and managerial processes. The reference process is based on a comprehensive literature survey and the execution of development projects for wireless Internet services. The goal of the article is to provide domain-specific guidance for project managers and software developers with accompanying lessons learned from the past.