**[ Platform · Shopify ]**Shopify development agency

# Stores that load fast and reconcile every order.

Custom Shopify themes, Plus and B2B builds, and migrations from WooCommerce, Magento or BigCommerce where the accountant finds nothing to fix. We measure speed in the field and keep the app list short on purpose.

[Get a written proposal](https://w3experts.com/start-a-project/)[Shopify or WooCommerce?](https://w3experts.com/services/shopify-development/#choose)

Typical timeline**4-10 weeks**

Covers**Shopify · Plus · B2B · WooCommerce**

Migrations**Woo, Magento, BigCommerce → Shopify**

Checkout**Tested with real orders**

Performance**Measured in CrUX, not just Lighthouse**

Launch timing**Never in your peak season**

![Open sign on a shop door](https://w3experts.com/_astro/media-cd435cff322c3993_5I3Ew.webp)Migrations · every order reconciled before launch

![Shopping bags on a dark background](https://w3experts.com/_astro/media-026529228201373d_Txfbe.webp)

![Customer paying at a store counter](https://w3experts.com/_astro/media-7ef27eb61533a58d_1tQFQB.webp)

Apps per store ≤ 8Mobile LCP target ≤ 2.0sOrders reconciled 100%Checkout tests Every methodStandards on every store build

Fit and scope

## Is a Shopify build the right project?

### Good fit if

- You want hosted checkout, payments and security without running servers
- Your team runs the store day to day and edits merchandising without a developer
- You are moving from WooCommerce, Magento or BigCommerce and need every order accounted for
- You need Plus features such as checkout extensions, B2B catalogs or expansion stores

### Not a fit if

- You need full control of checkout logic on a standard plan
- Your data rules require a store on servers you host
- You want twenty apps installed without a review of what each one costs
- You need a launch in the six weeks before your peak season

Platform fit

## Shopify or WooCommerce? Score it, don't guess.

We build both. The right answer depends on catalog, fulfillment and who runs the store day to day.

| Your situation | Shopify | WooCommerce | Why |
| --- | --- | --- | --- |
| DTC brand, growing fast, lean team | Best | Workable | Hosted checkout, payments and fraud tools are included. Less to maintain. |
| Content-heavy site that also sells | Workable | Best | WordPress editing, one admin, no headless gymnastics for the blog. |
| Wholesale, net terms, price lists | Best (Plus B2B) | With plugins | Native company accounts and catalogs on Plus. Woo needs several extensions. |
| Unusual checkout, taxes or bundles | Plus only | Best | Woo's checkout is yours to change. Shopify's is locked outside Plus. |
| Strict data residency or ownership rules | Limited | Best | You host it, you own the database. |
| No one to install updates or watch security | Best | Risky | Hosted platform patches itself. Woo needs a care plan. |

Scope by area

## What a Shopify build covers.

Each area is marked included, excluded or optional in the proposal.

01

### Theme

Custom Online Store 2.0 theme or a disciplined Dawn build. Sections your merchandisers compose themselves.

02

### Catalog and merchandising

Collections, filters, metafields, bundles, product page templates by category.

03

### Checkout and payments

Shop Pay, wallets, BNPL, discounts and shipping rules tested with real orders. Checkout extensibility on Plus.

04

### Apps

A short list, each justified. We measure the load-time cost of every app before it stays.

05

### B2B and wholesale

Company accounts, price lists, net terms, quick order on Plus. Password-protected wholesale on standard plans.

06

### Integrations

ERP, 3PL, Klaviyo, reviews, subscriptions, accounting. Tested end to end with sample orders.

07

### Performance

Image discipline, critical CSS, deferred apps. Core Web Vitals tracked in CrUX after launch.

08

### Migration

Products, customers, orders, reviews and URLs moved by script and reconciled against the source.

Inspectable artifact

## A migration reconciliation, as we deliver it.

A sample reconciliation with illustrative figures. The real sheet is yours after launch.

**reconciliation · sample-store · woo→shopify**6 entities · 6 matchIllustrative artifact

| Entity | Source (Woo) | Target (Shopify) | Method | Status |
| --- | --- | --- | --- | --- |
| Products | 1,842 (3,610 variants) | 1,842 (3,610 variants) | SKU match + price checksum | Match |
| Customers | 28,417 | 28,417 | Email match, marketing consent preserved | Match |
| Orders | 41,206 | 41,206 | Order number + total to the cent | Match |
| Reviews | 6,118 | 6,118 | Product + author + date | Match |
| URLs | 3,900 legacy paths | 3,900 redirects | Crawl: 0 × 404 after launch | Match |
| Gift cards | 214 active | 214 active, balances equal | Code + balance | Match |

[04a] WooCommerce

## WooCommerce, when WordPress is already home.

Catalog, checkout, shipping and tax rules, fulfillment integrations and a payment setup tested the same way we test Shopify. Built on a block theme, hosted in your account, maintained under a care plan.

- Custom checkout flows and bundles
- Subscriptions, memberships, B2B pricing
- Speed work that survives plugin updates

[WooCommerce development](https://w3experts.com/services/woocommerce-development/)

[04b] Shopify Plus

## Plus and B2B, when the catalog gets serious.

Checkout extensibility, Shopify Functions for discounts and shipping, company accounts and price lists for wholesale, multiple storefronts and markets. Scoped as sections of this service until you need a dedicated team.

- Checkout UI extensions and Functions
- B2B company accounts, catalogs, net terms
- Markets, multi-currency, expansion stores

How it works

## Four to ten weeks, launch on a quiet Tuesday.

We never launch on a Friday, before a sale, or during your peak season.

Wk 1 · Discovery

### Store audit and plan

Catalog structure, apps in use, analytics, fulfillment and the migration inventory if you are moving. Output: a written scope and the app shortlist.

Scope signed

2 hours, store admin access

Wk 2-4 · Design

### Templates and merchandising rules

Product, collection, cart and content templates designed around how people shop your category. Clickable prototype on mobile first.

Templates approved

Two reviews a week

Wk 4-8 · Build

### Theme, apps, integrations, migration

Theme build on a development store, integrations connected and tested with sample orders, migration scripted and rehearsed.

Staging store accepted

Content, product data, test cards

Wk 8-10 · Launch

### Reconcile, redirect, go live

Final data sync, reconciliation sheet signed, redirects tested, DNS switched off-peak, 14 days of monitoring.

Launch checklist green

Final approval

Engagement models

## Three scopes. Numbers in the proposal.

What changes the price: catalog size, custom checkout, number of integrations, migration volume, B2B features.

Scope A · Theme

### New theme on your store

4-6weeks

- Custom theme or disciplined Dawn build
- Core templates and sections
- App review and cleanup
- Speed baseline and launch checks

[Scope this](https://w3experts.com/start-a-project/)

Scope B · most chosen · Store + migration

### Full store build or replatform

6-10weeks

- Everything in Scope A
- Design phase with prototype
- Integrations tested end to end
- Scripted migration, reconciliation sheet
- Redirects and 14-day watch

[Get a proposal](https://w3experts.com/start-a-project/)

Scope C · Plus / B2B

### Shopify Plus program

8-14weeks

- Everything in Scope B
- Checkout extensions and Functions
- B2B catalogs and company accounts
- Markets and expansion stores

[Scope this](https://w3experts.com/start-a-project/)

From the founder

Every order, customer and product is matched to the source before DNS changes. A migration is accounting, not guesswork.

**Raihanul Roman**Founder & Design Director, W3Experts

Guarantee**100%**Records reconciled before launch

Adjacent

## Bigger, smaller or different?

Three doors next to this one.

[S10

### WooCommerce Development

WordPress stores with tested checkout, a short plugin list and updates run on staging first.](https://w3experts.com/services/woocommerce-development/)[S15

### Speed Optimization

Core Web Vitals work measured in the field, not just in Lighthouse.](https://w3experts.com/services/website-speed-optimization/)[S19

### Ecommerce Development

Not sure which platform? We score your requirements and recommend one.](https://w3experts.com/services/ecommerce-development/)

Questions

## Store owners ask us these first.

Will we lose rankings or orders when we migrate?

Not if the redirect map and reconciliation are done properly, which is the core of our migration scope. Every legacy URL is mapped and every order, customer and product is matched to the source before DNS changes.

How many apps is too many?

There is no fixed number. Each app can add scripts to every page and another bill to every month. We keep the apps that earn their place, write down why, and measure what each one costs in load time.

Do you build on Dawn or custom themes?

Both. A disciplined Dawn build suits smaller catalogs and budgets. Custom themes pay off when merchandising rules, B2B or brand requirements outgrow it.

Can you launch before Black Friday?

Only if we start by August. We don't launch in the six weeks before your peak, and we will tell you that on the first call.

Do we need Shopify Plus?

Most stores can start on a standard plan. Plus earns its cost when you need checkout extensions, Shopify Functions, B2B company accounts or several expansion stores. Plan features change, so we check the current terms against your scope during discovery.

Can you work on our current theme instead of replacing it?

Yes. Scope A starts with an audit of the theme and the apps around it. If the theme is sound, we fix templates, sections and speed in place. If it fights every change, we show you why a rebuild costs less to run.

How do you test checkout?

On a development store we place test orders for every payment method, discount type, shipping zone and tax case in scope. At launch we run a few real orders on the live store and refund them. Every result goes into the launch checklist.

Can you connect our ERP, 3PL or accounting system?

Usually, through the vendor's app or API. We scope each integration, test it end to end with sample orders, and document what syncs, how often, and what happens when a sync fails.

Who owns the store and the theme?

You do. The store, apps and billing stay in your Shopify account, and the theme code lives in a repository you own. We work through staff access that you control and can remove at any time.

What happens after launch?

Scopes B and C include 14 days of monitoring. After that you can move to a monthly care plan, call us for projects, or run the store with the handoff notes. Ongoing SEO and marketing campaigns are run by our sister agency BizAttic.

Next step

## Tell us about the store and the season you're aiming for.

1. **01 · Today**Instant confirmation and a booking link.
2. **02 · 1 business day**A senior engineer replies personally.
3. **03 · 5 business days**Written, fixed-scope proposal.