Case Study: a North America carrier client achieves $324M in annual savings by retiring 556 legacy systems with Cartesian PMO support

North America Carrier Client retires 556 legacy systems and saves $324M with Cartesian

Cartesian provided program management office (PMO) services for a North America carrier client. The client's IT department faced the challenge of high maintenance costs and slow time-to-market for new features due to its reliance on numerous legacy systems. Their strategic initiative aimed to retire these legacy business and operational support systems and migrate customer, service, and billing data to new target platforms.

Over an eight-year period, Cartesian's PMO managed the entire program, overseeing more than 250 individual software development and data migration projects. Their work included schedule and budget management, risk analysis, and executive reporting. As a result of this partnership, Cartesian successfully delivered projects that retired over 556 legacy systems, achieving annual cost savings of over $324 million for the client.