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    15 Sep 2026 TCS to Accelerate AI-Led Technology Transformation for Germany’s Aareal Bank
    View all

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    • Communications, Media, and Information Services
    • Video

    TCS enables Proximus’ AI driven Siebel Sales modernization

    Share TCS Enables Proximus’ AI-driven Siebel Sales Modernization
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    Connect. Curate. Comprehend: Unlocking Value Beyond Boundaries

    TCS helps businesses unlock value by enhancing digital experiences with AI and cloud technologies, driving sustainability and seamless connectivity. Learn how.
    Learn More
     about Connect. Curate. Comprehend: Unlocking Value Beyond Boundaries
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    TCS Enables Proximus’ AI-driven Siebel Sales Modernization
    Watch the video to know how TCS helped Proximus migrate its Siebel app to OCI with AI enablement, powering digital sales and delivering omnichannel experiences.
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    03 Feb 2026
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    13 Jul 2026

    HIGHLIGHTS

    • Proximus seamlessly migrated from a fragmented Siebel landscape to a unified, scalable OCI‑based platform with TCS, powering 24/7 digital sales with improved performance and resilience.
    • The transformation boosted uptime from 98% to 99.9%, accelerated transactions, reduced outages, and optimized operational costs, enhancing both customer and sales‑team experiences.
    • With the modernized Oracle Cloud foundation and TCS’s AI tools, Proximus is now poised to adopt advanced analytics, intelligent workflows, and generative AI to drive next‑gen business growth.

    TCS partnered with Proximus to transform Siebel Sales application on Oracle Cloud Infrastructure (OCI), delivering unmatched availability, agility, accelerated time-to-market, optimized costs, and a foundation for AI-driven innovation.

    Proximus, Belgium’s leading telecom provider, partnered with TCS to modernize its fragmented Siebel Sales landscape and deliver a seamless omnichannel experience. By migrating nearly 30 Siebel environments to Oracle Cloud Infrastructure (OCI) with Oracle Exadata Cloud Service, TCS unified the architecture into a resilient, scalable platform that now powers 24/7 digital sales.

    The cloud‑based transformation boosted performance and availability, improving uptime from 98% to 99.9% and reduced operational costs. It also accelerated transactions, minimized outages, and strengthened customer and sales‑agent journeys. With the modernized stack in place, TCS is leveraging the Siebel GitHub AI Tool to drive faster, higher‑quality innovation.

    Proximus is now building toward next‑gen capabilities using Oracle’s AI‑enabled ecosystem, focusing on advanced analytics, intelligent workflows, streamlined product lifecycle management, and higher order‑volume support for its growing B2B segment. Generative AI will further enhance sales and product development, ensuring agility and competitiveness in a rapidly evolving digital landscape.

    Swipe Left
    Swipe Right

    When you do a complex IT transformation or cloud migration, it’s crucial to have a partner with deep expertise in technology, who knows your past and understands where you want to go. TCS was that partner for this project.

    Jeroen Verbruggen,

    Chief Digital & Information Officer, Proximus

    TCS powers Proximus Siebel Sales transformation on OCI

    How Proximus partnered with TCS to migrate and modernize its Siebel app on OCI

    Transcript downloading Download transcript
    Swipe Left
    Swipe Right

    The movement of Siebel Application to the cloud, we did together with TCS on the Oracle stack. It enables and gives us access to AI-enabled technology. And there is an appetite in the business to articulate and further develop GenAI use cases also in the sales activities using Siebel. And the Oracle product stack allows that. So we will be further exploring together with TCS, what opportunities we can reap in the years to come.

    Yves Deschilly,

    Director- BSS Platform, Proximus

    HIGHLIGHTS

    • Proximus seamlessly migrated from a fragmented Siebel landscape to a unified, scalable OCI‑based platform with TCS, powering 24/7 digital sales with improved performance and resilience.
    • The transformation boosted uptime from 98% to 99.9%, accelerated transactions, reduced outages, and optimized operational costs, enhancing both customer and sales‑team experiences.
    • With the modernized Oracle Cloud foundation and TCS’s AI tools, Proximus is now poised to adopt advanced analytics, intelligent workflows, and generative AI to drive next‑gen business growth.

    TCS partnered with Proximus to transform Siebel Sales application on Oracle Cloud Infrastructure (OCI), delivering unmatched availability, agility, accelerated time-to-market, optimized costs, and a foundation for AI-driven innovation.

    Proximus, Belgium’s leading telecom provider, partnered with TCS to modernize its fragmented Siebel Sales landscape and deliver a seamless omnichannel experience. By migrating nearly 30 Siebel environments to Oracle Cloud Infrastructure (OCI) with Oracle Exadata Cloud Service, TCS unified the architecture into a resilient, scalable platform that now powers 24/7 digital sales.

    The cloud‑based transformation boosted performance and availability, improving uptime from 98% to 99.9% and reduced operational costs. It also accelerated transactions, minimized outages, and strengthened customer and sales‑agent journeys. With the modernized stack in place, TCS is leveraging the Siebel GitHub AI Tool to drive faster, higher‑quality innovation.

    Proximus is now building toward next‑gen capabilities using Oracle’s AI‑enabled ecosystem, focusing on advanced analytics, intelligent workflows, streamlined product lifecycle management, and higher order‑volume support for its growing B2B segment. Generative AI will further enhance sales and product development, ensuring agility and competitiveness in a rapidly evolving digital landscape.

    Swipe Left
    Swipe Right

    When you do a complex IT transformation or cloud migration, it’s crucial to have a partner with deep expertise in technology, who knows your past and understands where you want to go. TCS was that partner for this project.

    Jeroen Verbruggen,

    Chief Digital & Information Officer, Proximus

    TCS powers Proximus Siebel Sales transformation on OCI

    How Proximus partnered with TCS to migrate and modernize its Siebel app on OCI

    Transcript downloading Download transcript
    Swipe Left
    Swipe Right

    The movement of Siebel Application to the cloud, we did together with TCS on the Oracle stack. It enables and gives us access to AI-enabled technology. And there is an appetite in the business to articulate and further develop GenAI use cases also in the sales activities using Siebel. And the Oracle product stack allows that. So we will be further exploring together with TCS, what opportunities we can reap in the years to come.

    Yves Deschilly,

    Director- BSS Platform, Proximus

    HIGHLIGHTS

    • Proximus seamlessly migrated from a fragmented Siebel landscape to a unified, scalable OCI‑based platform with TCS, powering 24/7 digital sales with improved performance and resilience.
    • The transformation boosted uptime from 98% to 99.9%, accelerated transactions, reduced outages, and optimized operational costs, enhancing both customer and sales‑team experiences.
    • With the modernized Oracle Cloud foundation and TCS’s AI tools, Proximus is now poised to adopt advanced analytics, intelligent workflows, and generative AI to drive next‑gen business growth.

    TCS partnered with Proximus to transform Siebel Sales application on Oracle Cloud Infrastructure (OCI), delivering unmatched availability, agility, accelerated time-to-market, optimized costs, and a foundation for AI-driven innovation.

    Proximus, Belgium’s leading telecom provider, partnered with TCS to modernize its fragmented Siebel Sales landscape and deliver a seamless omnichannel experience. By migrating nearly 30 Siebel environments to Oracle Cloud Infrastructure (OCI) with Oracle Exadata Cloud Service, TCS unified the architecture into a resilient, scalable platform that now powers 24/7 digital sales.

    The cloud‑based transformation boosted performance and availability, improving uptime from 98% to 99.9% and reduced operational costs. It also accelerated transactions, minimized outages, and strengthened customer and sales‑agent journeys. With the modernized stack in place, TCS is leveraging the Siebel GitHub AI Tool to drive faster, higher‑quality innovation.

    Proximus is now building toward next‑gen capabilities using Oracle’s AI‑enabled ecosystem, focusing on advanced analytics, intelligent workflows, streamlined product lifecycle management, and higher order‑volume support for its growing B2B segment. Generative AI will further enhance sales and product development, ensuring agility and competitiveness in a rapidly evolving digital landscape.

    Swipe Left
    Swipe Right

    When you do a complex IT transformation or cloud migration, it’s crucial to have a partner with deep expertise in technology, who knows your past and understands where you want to go. TCS was that partner for this project.

    Jeroen Verbruggen,

    Chief Digital & Information Officer, Proximus

    TCS powers Proximus Siebel Sales transformation on OCI

    How Proximus partnered with TCS to migrate and modernize its Siebel app on OCI

    Transcript downloading Download transcript
    Swipe Left
    Swipe Right

    The movement of Siebel Application to the cloud, we did together with TCS on the Oracle stack. It enables and gives us access to AI-enabled technology. And there is an appetite in the business to articulate and further develop GenAI use cases also in the sales activities using Siebel. And the Oracle product stack allows that. So we will be further exploring together with TCS, what opportunities we can reap in the years to come.

    Yves Deschilly,

    Director- BSS Platform, Proximus

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    Tata Consultancy Services and Proximus modernised Siebel Sales on Oracle Cloud Infrastructure (OCI) to strengthen digital sales.\n- TCS migrated nearly 30 Siebel environments from a fragmented landscape to a unified OCI platform.\n- The new platform supports 24/7 digital sales and seamless omnichannel customer experiences.\n- Uptime improved from 98% to 99.9%, while transactions accelerated and outages decreased.\n- Modernisation reduced operational costs and improved journeys for customers and sales agents.\n- Proximus now targets advanced analytics, intelligent workflows, product lifecycle management, and Generative Artificial Intelligence (GenAI) use cases.
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