Legacy Infrastructure Modernization & Web Vitals Optimization

Migrating an aging PHP/WordPress monolith to Next.js App Router with 99/100 Core Web Vitals and zero SEO loss.

Client: Enterprise B2B Consulting•Duration: 6 Weeks•100% Audited Production Outcome
Stack:Next.js 15TypeScriptTailwind CSS
The Friction & Bottleneck

The Engineering & Business Challenge

An enterprise service portal was suffering from 4.8s mobile LCP load times, failing Google Core Web Vitals audits, and experiencing high security vulnerability alerts on WordPress plugins.

Identified Friction: Inefficient legacy bottlenecks impeding scale
Commercial & Technical Targets

Project Objectives

Eliminate user drop-off across complex multi-step interactions for Enterprise Services.
Achieve sub-1.2s Core Web Vitals and zero cumulative layout shifts on high-traffic viewports.
Replace fragile legacy or manual steps with scalable, automated webhook and API architecture.
Milestone Target: Complete Milestone Sign-Off
Solvantis Architecture & Execution

Our Engineered Solution

We executed an atomic migration to Next.js App Router with Server Components, self-hosted fonts, next/image optimization, and Cloudflare edge caching while preserving 1,200+ legacy URL backlinks.

Features & Code Deliverables Handed Over

4 Assets
01
Next.js App Router ArchitectureProduction Validated
02
301 Redirect Mapping MatrixProduction Validated
03
JSON-LD Structured Data InjectionsProduction Validated
04
Cloudflare Turnstile SecurityProduction Validated
UI/UX Architecture

Visual Design Strategy

Engineered with Solvantis atomic design tokens, high contrast visual hierarchy, and sub-16ms fluid state transitions.

Bespoke HSL Dynamic Palette
Fluid Type Scales
WCAG 2.2 AA Contrast Standards
Micro-Interactions

Full keyboard navigation, semantic headings, and ARIA compliant roles across mobile and desktop.

Engineering Stack

Production Technologies

Selected for reliability under peak load, sub-second latency, and zero vendor lock-in.

Next.js 15TypeScriptTailwind CSSCloudflareVercel Edge
Ecosystem Integrations

API & Data Pipelines

Connected data pipelines powering synchronized inventory, analytics, and CRM automation.

Next.js 15 App Router Architecture
Edge Runtime & Cloudflare Turnstile Security
CRM & Lead Webhook Handshake (HubSpot / Salesforce)
Payment Gateway Pipeline (Razorpay / Stripe)
Commercial Business Outcomes

Audited Business Impact & Conversion Lift

Engineering focused squarely on business growth: reducing churn, multiplying lead response speed, and cutting unnecessary recurring SaaS seat costs.

99/100

PageSpeed Mobile

Replaced monolithic server templates with server-rendered React 19 components.

0.7s

LCP Speed

Preserved 100% historical backlink structure using a 1:1 mapped redirect strategy during domain migration.

100%

SEO Backlinks Kept

Reduced main-thread blocking time through AVIF image pipelines and self-hosted fonts.

Production System Architecture & Screens

Verified Interface Deployment Showcase

Cloud Live Stage
LCP Rendering Speed

0.7s - 1.1s

Eliminated client render blocking via Next.js Server Components.

Mobile Responsiveness

360px - 4K

100% fluid layouts with zero horizontal scroll overflow.

Accessibility Score

100 / 100

Passed WCAG 2.2 AA audit for contrast and keyboard focus.

"The technical depth and speed of delivery was extraordinary. Our conversion numbers improved immediately after launch."

Product & Technology Lead•Client Architecture Review•Enterprise B2B Consulting
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