Delivering Exceptional Client Services from the Cloud

How CSI is supporting the digital transformation of a leading Building Society through the adoption of cloud technologies in Microsoft Azure.

Our Client: With 86,000 members and total assets exceeding £750m, Darlington Building Society (Darlington) has been serving the local community since 1856. Today, the Society has nine branches spread across the Northeast, County Durham, and North Yorkshire, supported by Darlingtonline, the Society’s dedicated online banking service.

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Success in today’s competitive markets demands that a business is resilient and flexible – a combination that challenges many organisations, but rewards those that make the right decisions.

Darlington successfully brings together traditional and digital approaches to business – investing in its branch network at the same time as investing in technology.


With Darlingtonline providing access to member accounts and an eBroker system to improve the processing of mortgage applications, Darlington reviewed its IT platforms and a decision was taken to take advantage of the flexibility and efficiency of a cloud environment.


With the nature of Darlington’s business involving access to sensitive financial and personal data, the threat of cyber attacks is always top of mind.

Being regulated by the Financial Conduct Authority means that Darlington has to meet extra levels of compliance and IT resilience – being able to identify threats and react swiftly to any potential breach.

Darlington Building Society welcomes the support of CSI with the recent migration to Microsoft Azure. The decision to move to the new cloud environment saw the Society increase our application performance, cost-effectiveness, and reliability. Following the successful cloud migration, we are looking forward to a strong future relationship as we continue to grow and invest in our digital future.

Jonathan Harwood, Head of IT, Darlington Building Society


Together CSI and Darlington evaluated the Society’s IT systems and applications and matched each one to the best cloud model for maximum efficiency. With this information, CSI designed a migration path to move all functionality to a secure environment in the Microsoft Azure cloud.

Following a seamless migration to Microsoft Azure, CSI continues to ensure that Darlington’s clients are protected with AI-powered cyber resilience and data protection, by implementing two complementary managed services:

Managed Endpoint Protection
• AI-based defence against malware
• Identification and removal of potentially unwanted programmes
• Pre-execution prevention

Managed Web Filtering
• Integrated web filtering and reporting
• SSL decryption at category level
• Web access control policy


CSI’s design uses Azure Infrastructure-, Platform-and Software-as-a-Service (IaaS, PaaS, and SaaS) to improve workload performance and reliability.

CSI built Darlington’s new servers using ‘infrastructure as code’ (IaC) and IT automation. The estate is continually checked, so compliance audits become ‘business as usual’ rather than periodic business disruptions.

By delivering cyber security services to protect endpoint devices together with managed backup and disaster recovery, CSI provides Darlington with the first line and the last line of defence against cyber threats.

Following the successful migration to Azure, Darlington received a positive independent assessment of its cloud strategy, highlighting the robust, well-considered approach taken by the IT Department around the wider data protection and information governance challenges.

For an in-depth version of the case study, click view our PDF brochure.


Darlington has 86,000 members


Total assets exceed £750 million


Serving the local community since 1856