  Managing dependencies between software services is a crucial task for any
company operating cloud applications. Visualizations can help to understand and
maintain these complex dependencies. In this paper, we present a force-directed
service dependency visualization and filtering tool that has been developed and
used within SAP. The tool's use cases include guiding service retirement as
well as understanding service deployment landscapes and their relationship to
the company's organizational structure. We report how we built and adapted the
tool under strict time constraints to address the requirements of our users. We
further share insights on how we enabled internal adoption. For us, starting
with a minimal viable visualization and then quickly responding to user
feedback was essential for convincing users of the tool's value. The final
version of the tool enabled users to visually understand company-wide service
consumption, supporting data-driven decision making.
