  The most successful organizations in the world are data-driven businesses.
Data is at the core of the business of many organizations as one of the most
important assets, since the decisions they make cannot be better than the data
on which they are based. Due to this reason, organizations need to be able to
trust their data. One important activity that helps to achieve data reliability
is the evaluation and certification of the quality level of organizational data
repositories. This paper describes the results of the application of a data
quality evaluation and certification process to the repositories of three
European organizations belonging to different sectors. We present findings from
the point of view of both the data quality evaluation team and the
organizations that underwent the evaluation process. In this respect, several
benefits have been explicitly recognised by the involved organizations after
achieving the data quality certification for their repositories (e.g.,
long-term organizational sustainability, better internal knowledge of data, and
a more efficient management of data quality). As a result of this experience,
we have also identified a set of best practices aimed to enhance the data
quality evaluation process.
