Free assessments available
|
find out more

AWS Application Modernisation.

Transform your existing systems with AWS application modernisation into flexible, secure, and cloud-native solutions that drive business growth.

Get Your Free Modernisation Assessment

Stay Ahead. AWS Application Modernisation Isn’t Optional, It’s Strategic.

Contact us

Reduce Infrastructure Costs

image

No more expensive licensing and hardware.

Enable Agility

image

Scale as you grow, adapt faster to change.

Strengthen Security

image

Leverage AWS-native protections and compliance.

Speed Up Development

image

Improve DevOps pipelines and release cycles.

Improve Developer Experience

image

Empower teams with cloud-first tooling.

Support Innovation

image

Enable data, AI, and new tech integrations.

We Modernise More Than Just Applications.

Infrastructure

Move from static systems to automated, flexible cloud environments.

Applications

Refactor, replatform, or rebuild for performance, DevOps, and microservices.

 Databases

Migrate to cloud-native, scalable, open-source, or purpose-built AWS data services.

 Operations

Automate processes, reduce manual tasks, and improve visibility across platforms.

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.
Read More
white up arrow
Energy

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.
Read More
white up arrow
Human Resources (HR)

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.
Read More
white up arrow
Energy
AWS Lambda

A Clear Path to Modernisation, Backed by Experience

Download Our Strategy Framework

1.Analyse

We review your current systems, goals, and tech environment to develop a tailored modernisation strategy.

2.Mobilise & Migrate

We define the future-state architecture, build cost models, and align to AWS best practices.

3. Modernise

Our team implements, migrates, and tunes your workloads, and supports your team for success.

Application Modernisation with AWS: Unlocking Agility and Innovation

At D55, we help businesses transform their software estate by aligning it with modern technologies, enabling faster delivery cycles, streamlined operations, and improved user experiences…

Read more

D55 Is Your AWS Partner for Long-Term Transformation

AWS-Certified Expertise

Deep experience with migrations, app refactoring, DevOps and database modernisation.

Funding Access

We help you leverage AWS’s Microsoft Modernisation or MAP programs to reduce your costs.

Custom-Tailored Delivery

No off-the-shelf solutions. Everything we design is mapped to your business goals.

Integrated Support

From DevOps enablement to governance, we cover the full lifecycle.

Collaboration First

We embed with your team, upskill internal staff, and ensure buy-in across departments.

Ready to Modernise? Let’s Build What’s Next.

Book a free assessment with our cloud team. We'll review your setup and provide a tailored roadmap for success, including cost and funding options.

Book a call
Contact Us

Frequently Asked Question

Find quick answers to common questions about our services, processes, and how we help you with your tax and financial needs.

Contact us

1. How do I know if I should modernise or just migrate?

image

We assess your applications and business goals to determine the best-fit approach. Some workloads may need refactoring; others can lift-and-shift.

2. How long does modernisation take?

image

It depends on system complexity. We typically deliver initial modernisation within 6–12 weeks.

3. Can we access AWS funding support?

image

Yes. D55 works with AWS to secure MAP or Microsoft Modernisation support based on your environment.

4. What if we’ve already migrated to AWS?

image

We can still help you optimise or modernise post-migration to fully leverage cloud benefits.

What our Clients Say

“While we led the initial business scoping and discussions with key stakeholders, it was a very smooth process working the D55 team to expand on this vision. The D55 team took ownership of building the solution and worked closely with us throughout the process. The quality of the work, combined with the excellent support during the handover, is exactly what we value in a partner.”

Andrew Thomas
CTO
Amber

" D55 enabled us to migrate from on-premise to a cloud-based solution, resulting in monthly cost savings of about 40%. Cloud-based systems give us a high level of resiliency and an unlimited capacity to scale. We’ve really put in place the foundations for later phases of work and further cost reduction as we scale. It was a partnership as opposed to a service - we work well together. "

Roger Worsley
CTO
kooomo

"Excellent technical knowledge, productive and responsive. Will go the extra mile to ensure customer satisfaction."

Chris Trigg
Co-Founder, Managing Director
ongen

"D55 are a highly experienced team that helped lead our business to push for and deliver an innovative and ambitious legacy to AWS transformation, with confidence. D55 have become a valued development and consultancy partner thanks to their excellent practical capability and their ability to apply the most appropriate working methodology to the challenge at hand."

Ed Berry
Head of Digital Products
switch2

"D55 have helped to develop our CRM system and have been a valued partner in this process. We continue to work with D55 on our application development and would have no hesitation to recommend them."

‍

Andrew Bright
Director
itp-energised

"D55 have proved to be an excellent development partner offering expertise and predictable delivery, with flexibility to respond to changing business needs. They have helped us explore new AWS technologies, challenged our thinking and sped up our adoption of relevant platform services."

Arran Stevenson
Director of Architecture
ensek

“D55 has been transformative for our business. They understood the business and our challenges and built a system that supports how we work now, as well as leveraging new technologies which are more cost-effective and increase our speed to deliver. Thanks to D55 we don’t have to worry about the day-to-day, so we can focus on the exceptional issues facing our industry."

D55 Client
CTO
uk-b2b-energy-company

Next Service

Data Modernisation
D55 Logo