Excel to Web Application

Turning Spreadsheets into Powerful AWS-Native Solutions

Many organisations rely on complex Excel spreadsheets to manage critical operations—finance models, scheduling, compliance tracking—but as they grow, these files become fragile, error-prone, and difficult to share securely. At GTS, we convert Excel to web applications, transforming manual workflows into secure, intuitive AWS-native apps. Our mission is to turn convert spreadsheets into web apps that eliminate risk while improving efficiency and user experience. 

What We Do

We specialise in helping organisations convert Excel to web apps and convert spreadsheets to web apps, fully hosted on AWS. Key capabilities include: 

Lambda & API Gateway for scalable, serverless compute

DynamoDB for secure, managed data persistence

S3 & CloudFront for global, reliable hosting

Cognito & SES for authentication, email, and audit trails

Why Choose Excel-to-Web Transformation

Operational Resilience & Security

Replace risky spreadsheets with governed applications that ensure AWS-native compliance, traceability, and access control. 

Speed to Value & Cost Control

Get up and running quickly with 2–6 week delivery cycles and pay only for what you use—no servers, licences, or hidden fees. 

User Experience & Efficiency

Give your staff intuitive tools they’ll actually enjoy using, making it easy to turn Excel into web apps that improve business efficiency. 

Transform the way you work. Let’s Talk.

Call Us

085 256 4964

Our Approach

  1. Discovery
    We review your current Excel files, logic, and workflows to understand your business rules.
  2. Prototype
    Within one week, we deliver an interactive mock-up so you can visualise your future web app.
  3. Build
    Our engineers convert your Excel into an AWS-native web application using secure, scalable architecture.
  4. Deploy 
    Your branded application is hosted in your AWS environment—fully maintained, monitored, and ready to use. 

Proven Results

- 73% Data Errors

Logistics client achieved 73% fewer data errors with a 3-screen app that replaced 14 Excel tabs. 

-80% in Processing Time

Finance client reduced processing time from hours to minutes with a web-based pricing model.

Zero Over-Booking

Operations team eliminated over-booking through automated scheduling rules. 

Straightfoward Packages

Fixed-fee options for common spreadsheet-to-app journeys. Custom quotes on request.

Starter

9,800
  • S3 + CloudFront hosting
  • Lambda + API Gateway
  • Basic Cognito auth

Team

18,500
  • SSO option (Cognito/ IdP)
  • SES emails & PDF output
  • Test suite & Audit logs
Popular

Enterprise

38,000
  • Step functions orchestration
  • Private networking options
  • Observability & SLAs

Proven Results

FAQs

Here are some common questions we receive.
Do you keep the Excel logic?

Yes, we map formulas, validations, and hidden rules into code with tests so behaviour is predictable and audited.

Yes, we commonly integrate REST, APIs, S3, Webhooks, and secure email. Private networking on enterprise. 

It is. We use fully managed AWS pieces – no VMs. Costs scale with use and are modest for small teams. 

You do. We can deploy to your account or ours – your choice. Either way, you keep the code.