Ecommerce Website Development · Mumbai & India
Ecommerce website development that turns browsers into buyers.
We build online stores that make products easy to find, checkout easy to finish and orders easy to manage. From Shopify stores that launch quickly to custom and B2B platforms, our in-house team handles ecommerce website development in Mumbai for brands selling across India and beyond.
What is ecommerce website development?
Ecommerce website development is the process of designing and building an online store where customers can browse products, add them to a cart and pay securely. It includes the storefront design, product catalogue and search, cart and checkout, payment gateway and shipping integration, and a back end for managing products, orders, inventory and customers. It can be built on a platform like Shopify or developed as a custom store.
What do ABC Designs’ ecommerce development services include?
ABC Designs is an ecommerce website development company in Mumbai, based in Andheri East and founded in 2012. We build Shopify stores, custom ecommerce websites and B2B ordering platforms for startups, D2C brands, retailers and manufacturers across India. Every store includes conversion-focused design, mobile-first development, payment gateway integration, product and inventory management, SEO-ready product and category pages, and support after launch.
01 — Diagnosis
Why isn’t my online store selling more?
When brands bring us a store that underperforms, traffic is rarely the only problem. It’s usually two or three of these issues losing sales between the product page and the payment screen.
Products are hard to find
You’ll notice: high bounce rates on category pages and searches that return nothing useful.
How we fix it: Clear categories, filters, search and navigation built around how customers shop.
Checkout loses people
You’ll notice: lots of carts, few orders.
How we fix it: Shorter checkout, guest checkout, UPI and COD options, and clear delivery costs up front.
It’s slow on mobile
You’ll notice: heavy product images and apps slowing every page on phones.
How we fix it: Optimised images, fewer apps, lean code and fast hosting.
Product pages don’t convince
You’ll notice: visitors view products but don’t add them to cart.
How we fix it: Better photos, sizing and delivery info, reviews and clear return policies.
Google can’t find your products
You’ll notice: almost no organic traffic to category or product pages.
How we fix it: SEO-friendly category structure, clean URLs, product schema and fast pages.
Operations are manual
You’ll notice: stock, orders and invoices updated by hand across systems.
How we fix it: Inventory, shipping and ERP integrations that keep everything in sync.
02 — What’s included
Our ecommerce website development services
Nine services, combined into one plan for your store. You don’t buy them separately: on the first call we work out which ones you actually need.
Shopify ecommerce website development
01Custom-designed Shopify stores for brands that want to launch quickly and manage everything easily.
- Custom theme design and setup
- App selection and configuration
- Indian payments and shipping setup
You get: A Shopify store ready to sell
As a custom ecommerce website development company, we build stores from scratch when platforms can’t handle your pricing, catalogue or workflows.
- Next.js and Laravel builds
- Custom checkout and pricing rules
- Headless commerce options
You get: A store built around how you sell
B2B ecommerce website development
03Ordering portals for distributors, dealers and business buyers.
- Customer-specific pricing and catalogues
- Bulk and repeat ordering
- Quote requests and credit terms
You get: Fewer phone and email orders, more online ones
Ecommerce UI/UX design
04Store design focused on discovery, product pages and reducing cart abandonment.
- Category and product page design
- Mobile-first checkout flow
- Trust signals and reviews
You get: A store that’s easy to shop
Payment gateway integration
05Secure payments your customers already use.
- Indian gateways such as Razorpay, PayU and Cashfree
- UPI, cards, wallets, net banking and COD
- International payments via Stripe or PayPal where needed
You get: A smooth, trusted payment step
Product, order & inventory management
06An admin panel your team can run the store from.
- Product and variant management
- Order and returns tracking
- Shipping, ERP and accounting integrations
You get: Less manual work every day
SEO-friendly ecommerce development
07Category and product pages built to rank from launch.
- Clean category and product URLs
- Product schema and metadata
- Fast, mobile-friendly pages
You get: Products Google can find
Move or modernise your store without losing products, customers, orders or rankings.
- Product, customer and order migration
- 301 redirect plan
- Conversion review of the old store
You get: A better store with your data intact
Updates, security monitoring and performance tuning after launch.
- Security and uptime monitoring
- Updates and backups
- Response within one business day
You get: A store that stays fast and safe during sales
03 — Choosing a platform
Shopify or custom: which ecommerce platform is right for you?
The right platform depends on your catalogue size, how you price, how you sell (D2C or B2B) and what your store must connect to. Here’s how we decide.
| Shopify | Custom ecommerce | |
|---|---|---|
| Best for | D2C brands that want to launch fast | B2B, unique pricing and deep integrations |
| Speed to launch | 4–6 weeks | 8–16 weeks |
| Who manages it | Your team, in the Shopify admin | Your team, in an admin we build |
| Running costs | Monthly Shopify plan plus app fees | Hosting and maintenance; no platform fees |
| Flexibility | Limited by themes, apps and checkout rules | Anything your business needs |
| Watch out for | App costs and checkout limits | Higher upfront cost |
| When we recommend it | Most D2C and small-to-mid catalogues | When platforms can’t do what you need |
Already on WooCommerce, Magento or another platform? We’ll audit your current store and tell you honestly whether to optimise it or replatform.
04 — Our process
How we build your online store, step by step
Every ecommerce project follows the same six steps, so you always know what we’re working on, what you’ll see next and what we need from you.
-
Step 1 · Discover
Understand your business
- Business model, products and customers
- Competitors and goals
- Platform recommendation
Deliverable: Scope, timeline and fixed quote · We need from you: Product list, goals, examples
-
Step 2 · Analyse
Map how people buy
- User journeys and purchase behaviour
- Scalability and integration needs
- Shipping, tax and payment requirements
Deliverable: Requirements and integration list · We need from you: Access to existing systems
-
Step 3 · Strategise
Plan the store
- Category structure and site architecture
- Checkout flow
- Integrations plan
Deliverable: Sitemap and wireframes · We need from you: Sign-off
-
Step 4 · Design & develop
Design and build
- Store design, desktop and mobile
- Development and integrations
- Product upload and setup
Deliverable: Staging store to review · We need from you: Product data and photos
-
Step 5 · Test & optimise
Test every order path
- Test orders on every payment method
- Speed, security and devices
- Shipping, tax and email notifications
Deliverable: Launch-ready store
-
Step 6 · Launch, monitor & improve
Go live and grow
- Launch with SSL and analytics
- GA4 ecommerce tracking
- Team training and post-launch optimisation
Deliverable: Live store, logins and training
05 — Timelines
How long does it take to build an ecommerce website?
A Shopify store usually takes 4–6 weeks; custom and B2B stores take 8–16 weeks. Product data and photos are usually the biggest variable, so we agree those dates first.
Shopify store. Custom design, apps, payments and shipping.
Custom D2C store. Custom build, checkout and integrations.
B2B ecommerce. Customer pricing, bulk ordering, ERP sync.
Typical ranges, not a guarantee. Your exact timeline is agreed in the scope.
06 — Built to sell
What we check before your store goes live
A store that breaks during a sale costs more than a slow launch. Here’s what we test, and the standard we test against.
| What we check | Why it matters | Our standard |
|---|---|---|
| Checkout & payments | Every failed payment is a lost order. | Test orders on every payment method, refunds included |
| Mobile experience | Most Indian shoppers buy on phones. | Android phones, iPhones and iPads; Chrome, Safari, Edge and Firefox on desktop |
| Page speed | Slow product pages lose buyers. | Built to Google’s “good” Core Web Vitals: LCP ≤ 2.5s, INP ≤ 200ms, CLS ≤ 0.1 |
| Security | Customers trust you with payment and personal data. | SSL, secure payment flows, admin access controls |
| Ecommerce SEO | Category and product pages should rank. | Clean URLs, product schema, sitemap, canonical tags |
| Tracking | You need to know what sells and where buyers drop off. | GA4 ecommerce events, Meta and Google Ads pixels |
07 — Our work
See the stores and websites we’ve built
The best test of an ecommerce website development company is a store they’ve built. Browse our live projects, check speed and checkout on your phone, then ask us on your first call how any of them were planned and built.
What we track after launch
- ✓ Conversion rate
- ✓ Cart abandonment
- ✓ Average order value
- ✓ Organic traffic to products
08 — By business type
What we prioritise depends on how you sell
D2C brands
Brand, story and repeat purchases drive growth.
FOCUS · Product pages, reviews, fast checkout
Fashion & lifestyle
Sizing, variants and visuals decide every sale.
FOCUS · Size guides, variants, easy returns
Manufacturers & distributors
Buyers want their prices and fast reorders.
FOCUS · B2B pricing, bulk orders, ERP sync
Retailers going online
Stock lives in a store and online at once.
FOCUS · Inventory sync, POS integration
Food & FMCG
Delivery areas, slots and freshness matter.
FOCUS · Pincode checks, delivery slots, subscriptions
Electronics & large catalogues
Shoppers compare specs across many products.
FOCUS · Filters, search, comparison
09 — Choosing a partner
How to choose the best ecommerce website development company in Mumbai
Every ecommerce website development agency claims to be the best ecommerce website development company in India. These six questions show which one can actually build a store that sells.
Can they show live stores?
Place a test order on stores they built. Check speed, checkout and mobile.
Do they recommend a platform honestly?
A good partner explains why Shopify or custom fits you, not what they prefer to build.
Do they understand Indian payments and shipping?
UPI, COD, GST invoices and pincode serviceability should be routine for them.
Is ecommerce SEO built in?
Category structure and product schema should be part of the build.
Will you own the store and data?
Platform account, code, product and customer data must be in your name.
Who supports you during sales?
Check response times for when things go wrong on a big sale day.
10 — Our standards
How we work: what we always do, and what we never do
We want you to know exactly what to expect before we start building your store.
We always
- Set up the store, domain and payment accounts in your name
- Hand over code, logins and product data at launch
- Run test orders on every payment method before launch
- Agree scope, price and dates in writing
- Train your team to manage products and orders
We never
- Lock you into our hosting or maintenance
- Install paid apps you don’t need
- Use pirated themes, plugins or extensions
- Store card data on your server
- Add hidden charges after the quote
11 — Pricing
How much does ecommerce website development cost?
Ecommerce website development cost in India depends on the platform, number of products, custom features, integrations and design. Platform and app fees (for example, a Shopify plan) are paid separately to the platform. You’ll get a fixed, itemised quote after a short call.
Shopify store
Fixed quote · 4–6 weeks
For D2C brands that want to launch fast.
- Custom theme design
- Payments and shipping setup
- Product upload and setup
- SEO and analytics setup
Custom ecommerce
Fixed quote · 8–12 weeks
For brands that need custom checkout, pricing or integrations.
- Custom design and build
- Admin panel
- Payment and shipping APIs
- Inventory management
B2B ecommerce
Quoted after scoping
For manufacturers and distributors selling to businesses.
- Customer-specific pricing
- Bulk and repeat ordering
- ERP and accounting sync
- Dealer logins
What changes the price: platform · number of products and variants · custom features · integrations (ERP, shipping, accounting) · data migration · product photography and content · ongoing support.
12 — Tools & technologies
The platforms and tools we build stores with
We pick the platform for how you sell and who will run the store after launch.
13 — FAQ
Ecommerce website development: frequently asked questions
Still unsure? Tell us about your products and we’ll answer these for your store specifically.
What is ecommerce website development?
Ecommerce website development is designing and building an online store, including the storefront, product catalogue, cart, checkout, payment and shipping integrations, and the admin used to manage products and orders.
How much does ecommerce website development cost in India?
It depends on the platform, number of products, custom features and integrations. A Shopify store costs less than a custom store, and B2B platforms are quoted after scoping. Platform and app fees are paid separately. After a short call you’ll get a fixed, itemised quote before any work starts.
How long does it take to build an online store?
A Shopify store usually takes 4–6 weeks; custom and B2B stores take 8–16 weeks, depending on features and how quickly product data is ready.
Should I choose Shopify or a custom ecommerce website?
Shopify suits most D2C brands that want to launch fast and manage things easily. A custom store makes sense for B2B selling, complex pricing, unusual checkouts or deep ERP integration. We’ll recommend one on the first call and explain why.
Which payment gateways do you integrate?
We integrate Indian gateways such as Razorpay, PayU and Cashfree, and international options like Stripe and PayPal, with UPI, cards, wallets, net banking and COD.
Do you build B2B ecommerce websites?
Yes. We build B2B ordering portals with customer-specific pricing, bulk and repeat ordering, quote requests and ERP integration.
Can I manage products and orders myself?
Yes. You’ll get an easy admin panel to add products, update stock and process orders, plus training at handover.
Will my store be mobile-friendly and SEO-friendly?
Yes. Every store is mobile-first, with SEO-friendly categories, clean URLs, product schema and fast pages. Our SEO team can grow organic sales after launch.
Can you move my existing store to a new platform?
Yes. We migrate products, customers and orders, and set up 301 redirects so you keep your Google rankings.
Are you an ecommerce website development company in Mumbai only?
We’re based in Andheri East, Mumbai, and build ecommerce websites for brands across India and abroad. You’re welcome to meet the team in person or work with us entirely online.
Do you provide support after launch?
Yes. Every store includes 30 days of free support for bugs and small fixes, then optional maintenance for updates, security and sale-day monitoring.
14 — Glossary
Ecommerce terms, explained simply
- Payment gateway
- The service that securely processes card, UPI and wallet payments on your store.
- Cart abandonment
- When shoppers add products to their cart but leave without buying.
- Conversion rate
- The share of visitors who place an order.
- SKU
- Stock keeping unit: a unique code for each product or variant.
- Headless commerce
- A setup where the storefront is built separately from the ecommerce back end, for more speed and design freedom.
- B2B ecommerce
- Online selling to businesses, often with custom prices, bulk orders and credit terms.
- Product schema
- Structured data that helps search engines show product details like price and availability.
- Replatforming
- Moving a store from one ecommerce platform to another.