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Market Demand for Agility Leads Tier 1 Asian Telecom to Move BSS to Cloud

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Case Study in Numbers

240 to 20 Minutes

Hot patch implementation time reduced

to 20 minutes on cloud

+10% CPU Utilization

CPU utilization improved from 65% on

on-premise to 75% on cloud

15 to 2.5 Hours

New software release rollout time

optimized from 15 to 2.5 hours

Challenge: Key Drivers Calling For A Change

The tier 1 Asian CSP, which serves hundreds of millions of prepaid and postpaid subscribers, is one of the world’s largest and most sophisticated CSPs. It operates in a highly competitive and dynamic landscape characterized by high penetration levels, dynamic business models, and empowered customers. These conditions require it to innovate continuously, and its OSS/BSS enterprise software must quickly enable the rollout of new services.

Furthermore, the CSP faced the challenges and complexities of handling almost 20 different OSS/BSS stacks across multiple regions. With that, it needed tools to help achieve architecture simplification and unification and to reduce its operational costs.

Solution: Modernizing And Cloudifying Optiva Charging Engine

The customer has partnered with Optiva for more than a decade, running on a legacy version of its charging solution. This was deployed across six production sites and six disaster recovery sites. It worked with Optiva to create a joint plan to upgrade Optiva Charging Engine to the latest Kubernetes enabled version. Also, one of the sites, serving a large regional hub, was moved to a private cloud to simplify operations and make it future-ready for the public cloud.

Pilot targets and success criteria were jointly agreed upon to measure the benefits of migration to a cloud-native application, including:

  • Revenue generation, oriented by improving time to market

– Faster software setup and patch updates

– Quicker releases

  • Cost reduction

– Capacity management via autoscaling (auto scale-in, auto scale-out)

– Optimized hardware and CPU utilization through cloud-native decomposition and automated software management


The private cloud migration was not an easy task with a decade-old solution and layers of customizations. However, by embracing cloud practices that embedded CI/CD and automated testing, it went smoothly and was declared a success. The CSP and Optiva teams flawlessly collaborated, executed, and migrated to cloud-native technology. That was achieved while also ensuring the new instance was compliant with the CSP’s high security and performance requirements and maintaining 100% business continuity.

The pilot production included live traffic migration from a bare metal instance of Optiva Charging Engine to a target cloud-native instance. Migration was of a single site, consisting of four million subscribers, out of the six sites the CSP operates.

The timeline from installation to full traffic migration was performed in the groundbreaking time of only four months. It included three main steps, which focused on the migration of the production traffic to comply with the CSP’s performance and customer experience requirements.