Ecommerce projects go wrong most often not during the build itself, but in the stages before and after it. Poor discovery leads to scope creep. Rushed launches lead to post-live fires. Understanding what a professional ecommerce development process looks like helps you hold your agency to account — and set your own team up to deliver what's needed.
The typical ecommerce development process
Stage 1: Discovery and requirements
Before any design or development begins, a good agency will spend time understanding your business. This involves reviewing your current setup, understanding your catalogue and pricing model, mapping out integrations, and clarifying what success looks like. The output is a scoping document that both sides agree on before work begins.
If an agency skips this stage and goes straight to a quote or a design, treat it as a warning sign.
Stage 2: UX and information architecture
How your store is structured — categories, navigation, product pages, checkout flow — has a direct impact on conversion rates. This stage maps out the user journey before any visual design is created, ensuring the structure is optimised for how customers actually browse and buy.
Stage 3: Design
Visual design is built on top of the UX foundations. For bespoke builds, this includes desktop and mobile designs for all key templates: homepage, category pages, product pages, basket, checkout, and account area. Design should be reviewed and signed off before development begins — changes during development are expensive.
Stage 4: Development
The main build phase. Platform setup, theme/template development, custom functionality, third-party integrations, and payment gateway configuration. A well-run development phase uses version control, a staging environment, and regular internal testing throughout — not just at the end.
Stage 5: QA and testing
A dedicated QA phase tests the store across devices, browsers, and screen sizes. This includes functional testing (can customers actually complete a purchase?), performance testing (does it load fast enough under load?), and integration testing (does the data flow correctly into your CRM, ERP, or fulfilment system?). Skipping or compressing this stage is one of the most reliable ways to create an expensive post-launch problem.
Stage 6: Content population and migration
Products, images, descriptions, and pricing need to be loaded into the new store. If you're migrating from an existing platform, this involves exporting, cleaning, and importing data — along with setting up 301 redirects to protect your existing SEO rankings.
Stage 7: Launch
A good agency treats launch as a planned event, not just clicking a button. This includes a pre-launch checklist (SSL, payment testing, email notifications, analytics), a DNS cutover plan, and monitoring in the immediate post-launch period. Someone should be available to deal with issues quickly on launch day.
Stage 8: Post-launch support
No site is perfect at launch. Post-launch support covers bug fixes, performance monitoring, and — for WooCommerce and Magento — ongoing updates and maintenance. Make sure you have a clear agreement in place before go-live, not after.
What you'll need to provide
- Product data, pricing, and imagery (or a plan for how these will be sourced)
- Brand guidelines, logo files, and any existing design assets
- Access to existing platforms or systems being integrated
- A named internal contact who can make decisions quickly
- Timely feedback at each review stage — delayed approvals delay launches
Ready to start your ecommerce project?
We run a structured, transparent process from brief to launch. If you want to understand what building your store would look like — timelines, milestones, and costs — we're happy to walk through it.