Case Study: Development Dimensions International achieves 50%+ annual material cost savings and improved assessor productivity with Twilio

DDI Improves Interview Assessment Scoring with Twilio

Development Dimensions International (DDI), a global talent‑management consultancy, needed to modernize tens of thousands of annual phone assessments used for hiring and promotion. The company was relying on obsolete cassette recorders and needed a flexible, cost‑effective solution that would be transparent to participants and add voice‑response capability to its Leader3 Ready® virtual assessments.

DDI integrated Twilio Voice (IVR and call recording) via the Twilio API—building a prototype in under two hours and a production solution in less than a month—to automate recordings, enable voice responses, and pass metadata into its scoring application. The rollout cut material costs by more than 50%, improved assessor productivity and file accessibility for QA and training, and successfully launched voice‑based simulations (piloted in Asia), spurring interest across other departments.

Development Dimensions International

Ryan Graham

Application Architect