Tata Consultancy Services > Case Studies > BT Revamps EE’s ERP

BT Revamps EE’s ERP

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 BT Revamps EE’s ERP - IoT ONE Case Study
Technology Category
  • Functional Applications - Enterprise Resource Planning Systems (ERP)
Applicable Industries
  • Telecommunications
Applicable Functions
  • Business Operation
  • Cloud Planning, Design & Implementation Services
The Challenge

BT wanted to modernize EE's legacy ERP to optimize customer spending and improve CX.

EE, BT's mobile and wireless services business, ran on a legacy SAP enterprise resource planning system (ERP). Hosted on the premises of a third-party service provider, the aging application was operating on a volume-based model, leading to longer time-to-market and delivery cycles. As a result, BT had to contend with higher costs and a dip in customer satisfaction. With a keen focus on improving customer experience, the telecom major sought a partner that could take charge of end-to-end application management services.

The Customer
About The Customer

BT Group plc (trading as BT and formerly British Telecom) is a British multinational telecommunications holding company headquartered in London, England. It has operations in around 180 countries and is the largest provider of fixed-line, broadband, and mobile services in the UK, and also provides subscription television and IT services.

The Solution

TCS migrates EE's SAP ERP to SAP HANA infrastructure on the cloud.

TCS set up an advanced command center for near real-time handling of issues and customer triage. The team built reusable assets and enabled predictive spend analysis. Adopting a Kanban approach to monitor operations, TCS substantially reduced the number of defects and defect leakages, thereby improving BT’s customer experience. The team proactively resolved issues overcame age-old design limitations, and continuously monitored the process chain to reduce the time to market.

TCS played a pivotal role in migrating EE’s legacy SAP ERP to SAP enterprise infrastructure on the cloud.  TCS assisted in upgrading the technology stack and migrating EE’s SAP database from Oracle to SAP HANA, a key milestone in the ERP transformation roadmap.

Operational Impact
  • [Product Improvement - Customer Satisfaction]

    TCS migrated the SAP database from Oracle to SAP HANA in under six months and without any defects. The TCS team ensured minimal disruption to BT’s business operations, resulting in a customer satisfaction rating of 100%

Quantitative Benefit
    • 3.2£ million cost saved in three years
    • 40% SAP infrastructure cost down
  • 40% Incidence baseline down to

  • 60% cost savings from service desk support

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