Case Study: Equans modernises its AWS estate with Leighton

EQUANS modernises 9 AWS repositories with Leighton

EQUANS, a global leader in energy, digital, and industrial services, faced the challenge of modernizing its legacy AWS estate that supported its critical HR starters, leavers, and amends (SLAM) portal. The platform relied on end-of-life tooling, specifically Serverless Framework v2, which presented significant licensing costs for an upgrade and created operational complexity across nine disparate repositories. To support future growth and innovation, EQUANS partnered with Leighton to achieve a more scalable, secure, and cost-efficient cloud foundation.

Leighton modernized the entire AWS estate by migrating it from Serverless Framework to AWS CDK (Cloud Development Kit) with TypeScript, establishing a future-proof Infrastructure-as-Code platform. The solution introduced standardized patterns, automated governance checks with CDK Nag, and modern CI/CD pipelines using GitHub Actions. This transformation enhanced security and governance, drastically improved developer productivity, and reduced operational complexity, positioning EQUANS' platform for reliable future growth free from legacy constraints.

EQUANS