Case Study: GBST achieves 100% test automation and full regression coverage with Tricentis Tosca Testsuite

GBST increases risk coverage and test automation for composer

GBST, a global provider of software and services for capital markets and wealth administration, faced growing testing overhead for its Composer product as manual regression tests accumulated over years. Their 36-person testing team needed a way to run repeatable regression suites for AU and UK back‑office and web releases without relying on technical scripting knowledge—previous keyword and data‑driven frameworks still excluded non‑technical testers and were costly to maintain.

By adopting Tricentis Tosca Testsuite and model‑based testing (Business Dynamic Steering), GBST automated the Composer base regression pack, enabled SMEs to design and convert manual tests to automated cases, and standardized verification and reporting. The result: test automation rose from 20% to 100%, test cases grew from 213 to 2,850 (test steps from 3,195 to 356,702), and regression effort fell from 90 days to 2 days—freeing manual testers for exploratory testing and improving release confidence.

GBST

Tuyet Le

Head of Development Wealth Management