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How M1 Modernized B2B Billing and Accelerated Time-To-Revenue
500,000+B2B services supported
99.95%billing accuracy rate
< 6months to platform stabilization
Customer Success Story

How M1 Modernized B2B Billing and Accelerated Time-To-Revenue

M1
Telecommunications

The customer

M1 serves over two million customers in one of the world’s most advanced digital economies. The company is recognized for delivering innovative, tailored solutions and bringing cutting-edge technology to market.

The challenge

As Singapore’s digital economy accelerated, M1 recognized that its aging billing system could no longer support its ambitions. Costly to maintain and slow to adapt, the legacy platform limited agility and introduced operational inefficiencies.

Manual workarounds and a rigid architecture made it difficult to scale enterprise services or meet growing expectations for digital engagement.

Rather than treating billing as a back-end function, M1 saw an opportunity to transform it into a strategic enabler—supporting faster innovation, improved accuracy, and better customer outcomes.

The solution

M1 approached modernization not just as a system upgrade, but as a transformation of how the business operates. In partnership with CSG, M1 implemented a cloud-native BSS platform designed for scalability, automation, and flexibility. The new solution streamlined processes, reduced complexity, and enabled faster response to market demands. With its modern billing foundation, M1 can now:

  • Automate workflows and reduce operational bottlenecks

  • Improve billing accuracy and consistency

  • Integrate seamlessly with partners via open APIs

  • Better support scalable enterprise service growth

This transformation replaced fragmented legacy systems with a resilient, future-ready platform that supports continuous innovation.

The results

The transformation delivered measurable improvements in core billing performance and operational efficiency:

  • Significant reduction in revenue leakage

  • Faster bill run completion times

  • 99.95% billing accuracy rate (in line with service targets)

  • Improved operational stability and reduced reliance on manual interventions

  • Platform stabilization within 6 months

  • 500,000+: B2B services supported
  • 99.95%: billing accuracy rate
  • < 6: months to platform stabilization

Summary

M1, Singapore’s first digital network operator, embarked on a bold transformation to replace its aging billing system and future-proof enterprise operations. M1 partnered with CSG to implement a scalable, agile billing platform supporting over 500,000 B2B services. Together, the teams improved billing accuracy, reduced revenue leakage, and accelerated time-to-revenue. M1 is now driving growth with greater operational efficiency, improved customer experiences, and a modern, cloud-native BSS foundation.

M1 set out to give enterprise customers what they value most: the power to act fast and adapt without limits. They led a sweeping B2B modernization driven by clear vision and hands-on leadership.


Letchu NarayananVice President, Asia Pacific, CSG

Together with CSG, we’ve moved from a limited legacy platform to a modern, scalable billing foundation that lets us run the business more efficiently and gives us a strong roadmap to innovate for our customers in the years ahead.


M1
Marko CetkovicChief Digital Officer, M1