  Agile development has now become a well-known approach to collaboration in
professional work life. Both researchers and practitioners want validated tools
to measure agility. This study sets out to validate an agile maturity
measurement model with statistical tests and empirical data. First, a pretest
was conducted as a case study including a survey and focus group. Second, the
main study was conducted with 45 employees from two SAP customers in the US. We
used internal consistency (by a Cronbach's alpha) as the main measure for
reliability and analyzed construct validity by exploratory principal factor
analysis (PFA). The results suggest a new categorization of a subset of items
existing in the tool and provides empirical support for these new groups of
factors. However, we argue that more work is needed to reach the point where a
maturity models with quantitative data can be said to validly measure agility,
and even then, such a measurement still needs to include some deeper analysis
with cultural and contextual items.
