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Web application modernization

The hardest part of web application modernization is deciding where to start. A complete rebuild can seem too expensive to justify. Patching individual problems one at a time can feel like stalling. Meanwhile, the cost of staying put keeps accumulating month after month.

At Brights, we start with an honest assessment of what the system actually needs. Sometimes a targeted fix is all it takes. Sometimes a full overhaul is the more cost-effective decision in the long run. What we promise is a clear, customized plan — and the reasoning behind it.

Let’s find the right starting point for you

Is your web solution slowing your business down?

Tech stack past its shelf life

Frameworks like AngularJS, jQuery, and PHP 5 no longer receive security patches, are harder to staff for, and resist integration with modern tools.

Slow pages, dropping rankings

Poor load times hurt search rankings directly. If your Core Web Vitals are failing, you're likely losing organic traffic to faster competitors.

The solution breaks on mobile

If your interface breaks or frustrates users on smaller screens, you're losing customers before they ever reach your core product.

Minor updates take weeks to ship

Tightly coupled architecture means a change in one place risks breaking another. Teams compensate with longer testing cycles, and the roadmap pays the price.

Security issues keep getting deferred

When fixing authentication gaps, outdated dependencies, or data handling issues consistently requires a major effort, the architecture is the problem.

Support costs outpace development

If most engineering time goes to keeping the system stable rather than building new features, modernization costs less than staying put.

See what your web app actually needs

We review your architecture, Core Web Vitals, and migration risks, delivering a clear roadmap before any work begins.

Web application modernization services.

Modernization audit & roadmap

First of all, you need a clear understanding of what's slowing your system down. As a web app modernization development consultancy, we review your architecture, score your technical debt, and deliver a prioritized migration plan — so every decision that follows is grounded in a comprehensive assessment of your system.

Frontend re-architecture

When your frontend is built on frameworks that are no longer maintained, every new feature costs more, and it gets harder to hire developers who know them. We migrate your codebase to a modern stack like React, Vue, or Next.js, establishing a component library and design system that gives your team a consistent, scalable foundation to build on.

Micro-frontend implementation

When multiple teams work on the same codebase, every release becomes a coordination exercise. The larger the team, the slower everything moves. We decompose your frontend into independently deployable modules, so each team can build, test, and ship their part of the product without waiting on others or risking the parts they don't own.

Backend re-platforming

An outdated backend puts a ceiling on everything built above it. We migrate your server-side logic from legacy stacks to a modern, maintainable architecture. If the system has grown too rigid to extend, we decompose it into independent microservices that are easier to scale and modify separately.

Core Web Vitals & performance optimization

Page speed directly affects your search rankings, bounce rate, and conversion. We diagnose the specific factors pulling your scores down, from render-blocking resources and unoptimized images to caching gaps and inefficient bundles. Then, we resolve them in a way that holds up under real traffic.

Web app UI/UX redesign

A confusing, visually inconsistent web app costs you users even if the underlying technology is sound. Our web app modernization design work starts with a UX audit, after which we rebuild your user flows, delivering a responsive design-system-backed interface that works across every device your users are on.

Accessibility remediation

Accessibility compliance is increasingly a legal requirement, not an optional improvement. We audit your web app against WCAG 2.2 standards, identify gaps across keyboard navigation, screen reader compatibility, and visual contrast, and implement the fixes — so your product reaches more users and meets compliance where it's enforced.

AI feature integration

Modernization is an opportunity to upgrade your product with capabilities your previous stack couldn't support. Once your architecture is rebuilt, integrating AI-powered features becomes straightforward. Intelligent search or conversational interfaces go in cleanly without being forced onto infrastructure that wasn’t designed to carry them.

Fabo's store rebuild: 60K+ sessions, 3x Black Friday orders

Fabo's rebranding was the right moment to rebuild their premium cosmetics online store for the next stage of growth. We modernized their platform with dynamic filtering across 3,000+ products, a custom CMS, full inventory-accounting synchronization, and Apple/Google Pay integration. After the launch, monthly sessions crossed 60,000, Black Friday orders tripled, and new customer acquisition reached 7,000+ annually.

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Results our clients see after web modernization.

Faster load times, better Core Web Vitals scores, and lower bounce rates

Search rankings stabilize or improve as performance and crawlability catch up

Features ship faster, with fewer dependencies and less risk per release

Infrastructure and maintenance costs drop as inefficiencies are resolved

Vulnerabilities are resolved. Security posture becomes easier to maintain

Accessibility compliance is achieved and documented, reducing legal exposure

How we handle web application modernization.

Security claims mean little without independent verification. Brights holds ISO/IEC 27001 certification and has delivered SOC 2 Type 2 compliant applications across regulated industries — standards with a paper trail that compliance officers and enterprise stakeholders can follow.

Technologies we work with.

Front-end

for visually appealing, responsive, and user-friendly web interfaces.

Back-end

for secure, efficient, and scalable server-side processing.

Rest API

Swagger

Languages

for versatile and efficient coding for various software needs.

Javascript

ES6

Typescript

Database

for reliable, fast, and efficient data storage and management.

MongoDB

PostgreSQL

MS SQL Server

Infrastructure

for optimal, scalable, and secure application performance.

GitHub

Bitbucket

AI tools

for faster code generation, test coverage, and documentation.

Claude Code

Cursor

Figma Make

Clients
say.

Brights is rated 5/5 average from reviews on Clutch

Insights on web application modernization.

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FAQ.

The audit covers your architecture, frontend and backend tech stack, performance benchmarks, security posture, as well as accessibility and SEO (if relevant). At the end, our company delivers a prioritized upgrade roadmap with a clear scope, estimated effort, and recommended approach for your specific situation.

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