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BACKGROUND

Modernizing critical systems during a high-stakes acquisition

A leading telecommunications provider was undergoing a large, strategic acquisition that required consolidating and modernizing its operational systems. With millions of customers relying on its billing and service platforms, the organization needed to evolve its technology foundation without disrupting day-to-day operations. 

THE OPPORTUNITY

The organization had an opportunity to modernize its legacy OSS/BSS systems to better support scalability, automation, and future cloud expansion. 

THE CHALLENGE

The organization needed to migrate and unify complex systems while maintaining uninterrupted service for millions of customers. 

THE CHALLENGE

Connecting fragmented legacy systems without disrupting customer experience

As part of the acquisition, the provider needed to bring together multiple legacy operational systems into a more unified, modern environment. Their existing billing platform lacked the flexibility and scalability required to support cloud-based capabilities and evolving customer demands.

The complexity extended beyond technology. Each system had unique dependencies, and any disruption could impact customer experience at scale. The organization needed to reduce latency, strengthen security, and create a more agile operating model while ensuring a seamless transition for millions of users.

THE SOLUTION

Designing a hybrid cloud foundation to support scale and speed

TSG partnered with the client to design and implement a hybrid cloud-based Operational Support System (OSS) that could support both current operations and future growth.

The team developed a scalable architecture aligned to the full software development lifecycle, from design through deployment. Agile delivery models were introduced to accelerate migration and improve cross-functional collaboration.

By consolidating legacy systems into a hybrid cloud environment, TSG enabled interoperability between existing and modern applications. The solution incorporated API-driven services, microservices-based architecture, and automated provisioning to support faster, more reliable releases.

abstract cloud structure with data
THE OUTCOMES

Delivering a stable transition while strengthening long-term capability

Seamless customer transition
Migrated millions of customer accounts to the new platform without service disruption
Improved operational agility
Introduced modern SDLC practices and automation to increase speed and flexibility
Stronger performance and security
Reduced latency and enhanced protection of critical customer data 
Foundation for continued modernization
Established a scalable, API-driven architecture ready to support future cloud expansion 

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