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To develop an ecommerce website that works well, start by defining what the store must sell and support, then choose a hosted platform or custom build, create a clear product-to-checkout path, select a payment setup deliberately, and test the finished store on mobile, desktop, and with assistive input. Treat performance, accessibility, security, and ongoing operations as build requirements—not last-minute polish.
1. Define the store’s requirements before choosing technology
Write down the decisions that shape the storefront and its back office. A requirements list makes it easier to tell whether a hosted platform fits or a custom build is justified, and gives the team concrete launch checks.
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- Catalog: products, variants, options, product imagery, inventory behavior, and approximate catalog size.
- Customers and markets: customer types and the regions where you intend to sell.
- Fulfillment: shipping, delivery, pickup, or other fulfillment arrangements, plus how shipping details and costs will be handled.
- Payments and policies: payment methods, returns and refund policies, and other store policies customers need to review.
- Integrations: services or systems the store must connect to, such as inventory or analytics tools.
- Operations: expected traffic, who will update products and fulfill orders, and who will maintain the site.
Turn each requirement into an acceptance check. For example: a customer can select each available product option, see the corresponding price, review shipping information before ordering, and receive a confirmation after a successful purchase.
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2. Choose a hosted platform or custom storefront
A hosted commerce platform can provide a storefront and managed checkout workflow; a custom build can offer more control but also requires decisions about implementation and ongoing maintenance. There is no universally best choice established by the sources cited here. Compare options against your own requirements rather than assuming that either approach is right for every store.
#1 Best Overall
| Decision area | Questions to answer |
|---|---|
| Setup and expertise | What can your team configure, and what would require ecommerce development skills? |
| Customer experience | Can you create the product, cart, and checkout flows your customers need? |
| Integrations and catalog | Can the platform support your product options, inventory workflow, and required integrations? |
| Payments | Which payment providers and checkout patterns are available, and how are payment-page elements delivered? |
| Operations and responsibility | Who handles maintenance, security work, content updates, and order support? |
| Geography and cost | Does the option fit the regions where you sell, and what is its full operating cost for your requirements? |
Shopify is one example of a hosted platform. Its documentation describes a platform-managed checkout and theme system, but that does not make Shopify the right fit for every project. Review current platform requirements and checkout behavior before committing.
Sources: Shopify Theme Store requirements and Shopify Checkout documentation.
3. Build the catalog around purchase decisions
A product page should give shoppers the information needed to decide, choose the right item, and understand what they are buying. As a practical checklist, Shopify’s theme requirements identify product title, variant price and unit price, compare-at price, description, option names and values, and viewable product imagery. These are Shopify-specific theme requirements, but they are useful prompts for planning product information in other storefronts too.
- Make product names and descriptions clear enough to distinguish similar items.
- Show the price that applies to the selected variant and make options understandable.
- Use images that customers can view and that accurately represent the product.
- Explain availability and what happens when inventory changes.
- Make shipping details and store policies easy to find before checkout.
Build category or collection pages that help people find products, then make the route from product selection to cart review obvious. The cart should let a shopper check selected items and quantities before continuing. During checkout, customers need to provide the information required for shipping and payment, place the order, and be able to review store policies. Shopify documents these parts of its own checkout flow; other platforms may implement them differently.
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After a successful order, show a clear confirmation and ensure the customer can understand what happens next. Include confirmation-email behavior in prelaunch testing rather than treating it as a separate afterthought.
4. Choose and integrate payments with the implementation in mind
Use a payment provider that fits your business and follow its integration instructions. Before making compliance assumptions, determine how the payment page is implemented: is the customer redirected to a provider, is the flow fully outsourced, or is a payment page or form embedded in your site?
PCI Security Standards Council guidance makes a specific distinction for SAQ A eligibility. Its cited script-attack criterion applies to pages that embed a third-party payment page or form; the criterion does not apply to the redirect or fully outsourced examples described in the FAQ. Separately, PCI SSC says SAQ A eligibility requires all payment-page elements to originate from PCI DSS-compliant service providers and none to originate from the merchant’s website. Other eligibility criteria still apply. A hosted processor alone does not establish that a merchant’s whole store is compliant.
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Rank #3
5. Design and test for mobile, accessibility, and speed
Include mobile browsing and buying in the first design, not just in a final resize pass. Test navigation, product options, cart review, forms, and checkout at narrow screen sizes as well as on desktop. A layout that looks good on a large monitor can still make important controls difficult to reach or use on a phone.
Accessibility checks
- Make navigation and purchase controls usable with a keyboard.
- Ensure keyboard focus is visible as a user moves through the page.
- Provide appropriate alternative text for product and informational images.
- Associate labels with form controls, including checkout fields.
These examples are included in Shopify’s theme requirements. Shopify also specifies supported mobile browsing environments for Theme Store themes; browser requirements can change, so consult its current documentation if you are submitting a theme.
Performance checks
Test realistic, populated product, collection, and home pages on desktop and mobile. Shopify’s current Theme Store submission requirements call for an average Lighthouse performance score of 60 and an average accessibility score of 90 across those page types and device contexts. Those figures are Shopify submission thresholds—not universal requirements, guarantees of usability, or evidence that a store will convert well.
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Source: Shopify Theme Store requirements.
6. Test end-to-end before launch
Use real catalog content and representative devices and purchase scenarios. A launch checklist should cover the full path from discovery through post-order handling.
- Browse: follow links from the home page to collections and products; check for broken links and missing content.
- Select: test each product option and confirm that price, availability, and displayed details match the selection.
- Review the cart: change quantities, remove items, and confirm that the cart reflects the intended products.
- Check delivery and policies: verify that shipping calculations and relevant store policies are clear in the purchase flow.
- Place a test order: follow the payment provider’s approved test process and verify the order confirmation and email behavior.
- Review after purchase: test the store’s documented refund and order-support processes.
- Repeat across devices and input methods: check narrow mobile screens, desktop layouts, keyboard access, and visible focus.
- Measure populated pages: review performance and accessibility on actual templates, not empty or placeholder pages.
Shopify’s theme documentation and checkout documentation describe Shopify’s own requirements and workflow; they are useful references, not a substitute for testing the behavior of your chosen platform and configuration.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.7. Protect integrations and keep reviewing the store
If you are building a Shopify app to accompany a store, Shopify App Store rules require TLS for client-to-server exchanges and ask apps to request only the access scopes needed for their functionality. Those rules apply to Shopify App Store apps and do not replace a complete security and privacy review.
After launch, keep checking the store as products, integrations, and platform requirements change. Revisit the purchase path after updates, and confirm that product data, shipping behavior, payment flow, confirmation messages, and accessibility remain correct. Shopify’s theme and app requirements can change, as can payment standards and assessment rules.
Source: Shopify App Store requirements.
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