E-Commerce Development & Optimization

Build high-performance websites that scale. Not just websites that look good.

We create custom websites with modern UI/UX, responsive development, and seamless navigation to help businesses showcase their brand, engage visitors, and increase conversions.

Designer reviewing an ecommerce mobile storefront mockup on dual monitors

What this service is

E-commerce development and optimization is the work of building and improving an online store so more of its visitors become customers and repeat buyers. It covers UX and UI, product pages, checkout, speed, integrations and measurement. Encompass Ideas treats the storefront as part of the growth system, so design decisions are tied to conversion and customer value, not appearance alone.

Reviewed by the Encompass Ideas senior team · Last reviewed:

Getting traffic, but leaving conversions on the table.

A store can look polished and still lose buyers at the product page, the cart or the checkout. Paying for more traffic does not fix that.

  • Visitors browse but do not add to cart.
  • Mobile conversion trails desktop by a wide margin.
  • Product pages do not answer the questions buyers have.
  • Checkout feels slow, long or untrustworthy.
  • The site is slow on real phones.
  • Nobody is sure which changes actually moved the numbers.

The storefront path

  1. Diagnosis
  2. UX/UI
  3. CRO
  4. Checkout
  5. Retention
  6. Optimization

How we build and optimize

  1. E-Commerce Growth Diagnosis

    We analyze your store, funnel, and customer journey to identify growth barriers. From UX gaps to checkout issues, we uncover what is stopping scale.

  2. UX/UI Optimization

    We optimize UX/UI design to create seamless and intuitive shopping experiences across all customer touchpoints. From homepage to product pages, we improve usability, engagement, and conversion rates for better e-commerce performance.

  3. Conversion Optimization

    We use data analytics, A/B testing, and customer behavior insights to improve conversion rates and reduce bounce rates. Our CRO strategies help D2C brands maximize revenue from existing traffic and improve overall store performance.

  4. Checkout Experience Optimization

    We optimize checkout flows to reduce cart abandonment and increase completed purchases. By improving payment experience, trust signals, and checkout speed, we help brands boost conversion efficiency.

  5. Retention & Customer Growth

    We integrate AI-powered recommendations, automation, loyalty programs, and customer retention tools to improve repeat purchases and long-term customer value. These solutions help D2C brands build stronger customer relationships and drive sustainable revenue growth.

  6. Performance Monitoring & Optimization

    We track website performance, customer behavior, and conversion metrics to identify new opportunities and continuously improve your website experience and business growth.

What you receive

  • High-Converting E-Commerce Store
  • UX/UI Optimization
  • Conversion Rate Optimization
  • Checkout Optimization
  • Growth Integrations
  • Performance Roadmap

Selected proof

  • Revité — 6.5X growth on Amazon, selected work by Encompass Ideas
    Revité 6.5X growth on Amazon Amazon growth within 3 months. Adjacent proof

    Rebuilt brand identity, packaging, website and Amazon listings for marketplace growth.

    Read the case study

What people say about working with us

These are LinkedIn recommendations for our founder, Sukanya Chatterjee , shown with their original wording.

  • I have had a pleasure of working with Sukanya for over a year and it was such a delightful experience. She efficiently delivered the products and was enthusiastic about pitching new ideas.

    Nikhil Kalyanpad Marketing professional Client · 17 January 2023 LinkedIn recommendation for our founder

See all recommendations on LinkedIn

Why this is different from a web agency

  • Growth-led, not design-led

    Every design decision is tied to conversion, checkout completion or repeat purchase, not to appearance alone.

  • Connected to acquisition

    The store is planned with the ads, creators and marketplaces sending traffic to it, so the landing experience matches the promise.

  • Measured after launch

    We keep tracking behaviour and conversion after go-live and keep improving, instead of handing over and leaving.

Best fit

  • D2C brands getting traffic that does not convert well enough.
  • Brands planning a redesign or a custom store on Shopify or another platform.
  • Teams that want strategy and build from one partner.

Not the right fit

  • Projects that only need a brochure site with no commerce goals.
  • Brands that want a design refresh with no measurement plan.
  • Teams expecting guaranteed conversion-rate outcomes.

What happens after you book

  1. Book a time

    Choose a 30-minute slot that suits you.

  2. Talk to a consultant about your product pages, checkout and retention

    An introductory call of up to 30 minutes. We learn what you need and explain the solutions we offer.

  3. You decide whether to go ahead

    We agree scope and fees with you first. Nothing starts until you say yes.

See how an engagement runs

Questions we get asked

How is this different from a website development agency?
A typical web agency delivers a site. We treat the store as a growth asset, so strategy, UX, conversion, checkout, retention and measurement are planned together and improved after launch.
How do you improve conversion rate?
We study the customer journey and behaviour data, then improve navigation, product pages, speed and checkout, and validate changes with testing where traffic allows. We do not promise a specific uplift in advance.
Why does checkout matter so much?
Because that is where buyers with intent leave. Baymard Institute’s research puts the average documented online cart abandonment rate at 70.19%, and its checkout research finds many sites have room to improve the experience. See Baymard’s cart abandonment statistics.
Does site speed affect results?
Yes, it is part of the experience. Google’s Core Web Vitals treat a largest contentful paint of 2.5 seconds or less, interaction to next paint of 200 milliseconds or less and cumulative layout shift of 0.1 or less as good, measured at the 75th percentile of real visits. See web.dev on Core Web Vitals.
Do you build custom D2C stores and redesigns?
Yes. We build custom D2C stores and redesign existing ones, on Shopify or custom builds, depending on what your business needs. We choose the platform after the diagnosis, not before it.
What about retention after the first purchase?
Repeat purchase is part of the storefront’s job. We set up the on-site pieces, and for WhatsApp and email flows we work with you through Retention Marketing.

More questions? See all FAQs

Getting traffic but leaving conversions on the table?

Identify the UX, product-page, checkout and retention barriers holding your store back.

A call of up to 30 minutes with one of our consultants about your product pages, checkout and retention.

Book Your Growth Audit