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Unlock Innovation with AWS API Gateway

APIs are the backbone of modern digital platforms. As an AWS Advanced Partner, D55 uses Amazon API Gateway to design, deploy, and manage APIs that are secure, scalable, and ready for growth.

Start Your API Project

Simplified API Management

Create, deploy, and manage APIs without infrastructure overhead. Built-in tools for authentication, authorisation, and rate limiting streamline operations.

MobilScalable & Reliable by Defaultise

From a few requests per minute to millions per second, API Gateway scales seamlessly while maintaining low latency and high availability.

Security First

Protect APIs with built-in authentication, encryption, and IAM integration, whether for internal use, partner access, or public-facing services.

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API-Driven Architectures

Microservices, serverless backends, and modern applications powered by API Gateway.

Event-Driven Integrations

Connecting APIs with AWS Lambda, Step Functions, and EventBridge for real-time workflows.

Developer Experience

Automated CI/CD pipelines, documentation portals, and monitoring for your APIs.

The Business Impact of API Gateway with D55

Faster Development

Streamline delivery and reduce time-to-market.

Optimised Costs

Pay only for usage, no idle infrastructure.

Stronger Security & Compliance

Meet industry standards with built-in features.

Seamless Collaboration First

Connect systems, partners, and customers via APIs.

Scalable Growth

Handle spikes and expansion without re-engineering.

Why Partner with D55?

AWS Advanced Partner with serverless & API expertise

Proven success across SaaS, energy, finance, and healthcare

DevOps-first approach → secure, production-ready APIs

Experience with large-scale, regulated industries

Access to AWS-funded programs for PoCs & migrations

Start your journey

Ready to Scale with APIs?

APIs are no longer optional, they’re the foundation of modern business. With Amazon API Gateway and D55’s expertise, you can deliver secure, scalable, and high-performance APIs that unlock innovation and growth.

Book a Free API Strategy Call

Explore API Gateway Solutions

Solving problems and supporting innovation

Real-World Success Stories

Our notable area of specialism is the energy sector, where we have deep domain knowledge. However, the commonality of the challenges means that frequently work across diverse industries, including for private equity backed growth businesses, and would love to talk to you about how D55 can redefine how you think about modernisation.

Take a look at our collection of case studies showcasing the transformative impact of partnering with D55 and AWS.

All case studies

Amber

Amber is a forward-thinking energy and utilities provider committed to delivering efficient, reliable, and user-friendly services to its customers.

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An HR Software Company

D55 helped the customer modernise their Microsoft SQL Server database to AWS Aurora Postgres, unlocking annual cost savings of over £150,000 and improving scalability.

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A Software Provider for the Energy Industry

D55 partnered with the customer to design and implement a high-performance, serverless pricing engine using AWS that delivers faster, scalable energy pricing capabilities for their SaaS platform.

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Kooomo

D55 partnered with Kooomo to migrate their infrastructure from an expensive, risky data centre to AWS, saving money, enhancing resilience, and enabling scalability.

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A Leading Online-Only Pharmacy

D55 modernised and secured the customer's AWS infrastructure, enabling ongoing innovation and enhanced competitiveness in a dynamic market.

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An Intelligence Provider

Complex event processing for an intelligence provider. In the six-month period following the project, revenues have materially increased following an improved level of service quality.

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Switch2

Switch2 is the UK’s most experienced and capable provider of end-to-end solutions for heat networks.

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ITP Energised

ITPEnergised is a world-leading consultancy offering energy, environmental, engineering, technical advisory and renewables asset management services.

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OnGen

OnGen developed a sophisticated Excel model to perform the calculations necessary to determine which technologies work for a given location based on a customer’s financial or carbon-saving goals.

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A UK-based sustainable B2B Energy supplier

Reliably integrated systems means the customer can scale efficiently and a new data lake has improved data quality and enabled rapid data-driven decision making to release new and innovative solutions.

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