E-commerce performance optimization

Make Q4 satisfyingly boring. Protect your revenue.

No more Black Friday crashes. No more slow checkouts. Just fast, stable performance when every conversion counts.

TRUSTED BY

logo Vercel
logo vibes
logo arthur
logo tom tailor
logo cook unity
PROBLEMS WE SOLVE

Is slow performance bleeding your revenue?

High-growth e-commerce on React or Next.js? Or stuck on a legacy stack? These problems probably look familiar.

01

Peak traffic crashes

Black Friday hits and your site slows, or crashes entirely. The days that drive most of your revenue become your highest-risk moments.

02

Slow pages, lost sales

Pages take too long to load, costing you conversions with every second. Customers abandon carts. Not because of price, but load time.

03

Failing Core Web Vitals

Your Core Web Vitals are red: LCP, INP, CLS all failing. Google ranks you lower, users bounce faster, and marketing spend converts worse.

04

Large bundles, delayed interactivity

820KB+ of blocking scripts means users click "Add to Cart" and nothing happens. They click again, then leave.

Peak traffic shouldn't mean peak stress. But right now, every campaign launch comes with anxiety. Every Black Friday means firefighting.

It doesn't have to be this way.

OUR SOLUTION

From dreading peak traffic to banking on it

Peak seasons should be your biggest paydays, not your biggest headaches. Here's what changes when your infrastructure is built to scale

Performance is a revenue problem

Whether you're on Next.js or migrating from a legacy stack, we work with what you have. No rip-and-replace. No 18-month roadmaps.

How we approach it

We start where the money is: checkout, product pages, high-traffic landing pages. Then we diagnose, optimize, and stress-test until your site handles whatever you throw at it.

Real outcomes delivered

Stable under peak traffic

Peak traffic, campaign launches, product drops. They feel routine, not risky. Scale marketing spend mid-campaign because your infrastructure holds.

Faster pages, higher conversions

Fast pages where they matter most. CookUnity: 70% faster interactivity, 28% more conversions.

Green Core Web Vitals

LCP, INP, CLS all passing. Better rankings, lower bounce rates, more efficient ad spend.

Confidence to scale

Scale marketing spend when campaigns are working. Your infrastructure holds. You can invest aggressively and win.

Fast where revenue happens

Checkout, product pages, personalized content. The high-value pages that were slowest are now fastest.

Marketing speed, no trade-offs

A/B tests, personalization, campaign launches. Without destroying site speed.

Ready to make Q4 boring?

Stop holding your breath every time traffic spikes. Let's talk about making your e-commerce platform fast, stable, and dependable. So you can focus on growth, not firefighting.

OUR APPROACH

How we remove the technical barriers between your traffic and your revenue

01. Rendering Strategy

open tab

SSR, SSG, ISR, PPR. Matched to each page type. Most teams default to SSR everywhere and watch server costs spike. ISR for product pages, SSR where session data requires it, PPR for personalized content.

02. Caching Architecture

open tab

Edge caching, CDN configuration, cache invalidation. The difference between a 3-second page and a 300ms page is often one misconfigured header. Proper caching shields your backend from traffic spikes.

03. Core Web Vitals

open tab

LCP, INP, CLS diagnosed and fixed at the source. INP is the hardest. It requires architectural change, not optimization. CookUnity: 70% INP improvement after we rebuilt their signup flow.

04. Peak Traffic Infrastructure

open tab

Auto-scaling, load balancing, architecture built for Black Friday. ISR ensures millions of users hit the cache, not your origin server. When 40-70% of annual revenue hits in one week, that matters.

05. Third-Party Scripts

open tab

Tag managers, analytics, A/B tools, personalization engines. A single unoptimized OneTrust banner adds 400KB of blocking JavaScript. We audit every script and load them without blocking the main thread.

06. Conversion Flow Speed

open tab

Checkout, cart, product pages. Optimized for sub-second response. These pages generate the most revenue but are often the slowest. Every 100ms at checkout directly impacts conversion rate.

CASE STUDY
Cook Unity logo

Challenge: Legacy React/Redux with spaghetti code throughout. Poor INP — the hardest Core Web Vital to fix. Signup funnel directly tied to revenue. Deployments once a month.

Solution: Migrated signup funnel to Next.js with server-side rendering.

Read the full case study →
50%

INP improvement

28%

Conversion rate increase

30x

Faster deployment cycle

70%

Development speed boost

WHY BLAZITY?
trust icon

Trust Before Engagement

Test our OSS libraries, check our partners, talk to our clients—before you commit.

next.js icon

Expertise That Goes Deep

100% Next.js. Enterprise-grade. Frontend, infrastructure, architecture.

ownership icon

Ownership, Not Tasks

Engineers who think like owners. Proactive, accountable, quality-obsessed.

partnership icon

Partnership That Makes You Stronger

We build your capability, not your dependency.

LET'S TALK

Ready to make Q4 boring?

We'll respond within 24 hours with next steps.

“We are very happy with the outcomes and look forward to continuing to work with them on larger initiatives.”

The contact information is only used to process your request. By clicking submit, you agree to allow us to store information in order to process your request.
*Required fields.
Thank you.
Your submission has been received.
Oops! Something went wrong while submitting the form.