eCommerce Development Process: 5 Stages From Discovery to Launch

CoreDron’s eCommerce development process runs through five stages: Discovery & Kickoff, Architecture & Platform Decision, Build, QA & Testing, and Launch & Handoff. A standard custom or Shopify-based build typically takes 8–16 weeks end-to-end, while complex replatforming, headless commerce, ERP integrations, or multi-region builds can extend beyond 20 weeks. Each stage has defined deliverables, clear client visibility, and continuity from the team involved in the original technical decisions through delivery.

The 5 Stages at a Glance

Introduction – Why the Process Matters More Than the Pitch

Every agency’s sales deck says roughly the same thing: we discover, we design, we build, we launch. It sounds reasonable. It also tells you almost nothing about what you’re actually buying.

The stakes are real: According to the IBM Systems Sciences Institute, a defect caught during the design phase costs a fraction of what the same defect costs to fix once it’s live; by some estimates, up to 100x more once it reaches production.

A vague process description usually means testing isn’t a distinct, planned stage. That’s not a paperwork problem. It’s the difference between a bug your QA team catches and one your customers do.

What follows is what actually happens at each stage, what gets delivered, who does the work, and how the process works from the first call to launch day. You can also explore our eCommerce development services to see the broader capabilities behind this process.

5 Stages of CoreDron’s Development Process

Stage 1 – Discovery & the 2-Week Kickoff

Discovery runs on a fixed two-week clock. By day 14, you have:

• A scoped requirements document
• An architecture recommendation
• A sprint plan

Who’s in the room: the technical team responsible for the project, together with a dedicated project manager. The goal is to reduce information loss between discovery and development by keeping the people making important technical decisions involved throughout the project.

That handoff is where many agencies quietly lose accuracy. The people involved in defining important technical decisions during discovery remain involved as those decisions are implemented during development.

By the end of Stage 1, you know:

• What’s being built
• Roughly how the platform call will get made
• How many sprints the build will run
• Exactly who’s assigned (by name)

Stage 2 – Architecture & Platform Decision

The platform recommendation is based on the requirements of the project rather than a default agency preference. For businesses considering Shopify development, the evaluation typically considers:

If you’re weighing a headless build specifically, see our guide to headless commerce development for a deeper look at when the architecture makes sense and what drives its cost.

By the end of Stage 2, you have: a named platform recommendation, with the reasoning behind it documented; not just a name dropped into a proposal.

Stage 3 – Build & Sprint Delivery

Development runs in fixed sprints. Each one ends with a working demo; not a single big reveal at the end of the project.

What client visibility looks like week to week:

• A live staging link you can click through anytime
• Short standups between demos
• A working demo at the end of every sprint

What Consistent Technical Ownership Changes

Keeping the technical team involved from discovery through development reduces the risk of important requirements being lost between handoffs. The people making architectural decisions also understand the implementation context, which makes it easier to resolve questions when requirements evolve during the build.

For the client, the practical benefit is continuity: fewer explanations repeated between teams, clearer accountability for technical decisions and a development process where project context is retained throughout delivery.

In practice, that gap means fewer mid-sprint surprises and fewer features that need substantial rework after you’ve already seen them live.

Stage 4 –  QA & Testing

Before launch, the build is evaluated across four testing layers. The exact testing scope depends on the project’s functionality, integrations, traffic expectations, and customer journey:

“We test thoroughly” isn’t a process; it’s a sentence with no deliverables behind it. Each layer above produces its own pass/fail record before anything moves toward launch.

Stage 5 – Launch & Handoff

What ships on launch day:

• Production deployment
• Final live check of payment processing and checkout
• DNS/domain cutover (where needed)

What you receive:

• Full documentation of what was built
• Complete repository access
• Admin credentials
• 100% IP ownership – no dependency on the agency to change your own site later

The first 30 days post-launch are treated as a defined support window, giving the team an opportunity to identify and address issues that only become visible under real customer traffic.

Real customer traffic surfaces edge cases pre-launch testing can’t fully catch; someone always finds the one browser-and-coupon-code combination QA didn’t test.

The same senior team that built the platform handles that window, so issues get diagnosed against the actual build logic instead of re-explained from scratch to someone new.

What Makes This Different From a Typical Agency Process

The structural difference is senior-only staffing, no junior “bench” rotating through to keep costs down, no mid-project swap where the team that scoped the work isn’t the team that builds it.

Common Mistakes Businesses Make When Evaluating an Agency’s Process

Accepting a process description with no named deliverables per stage. “We handle discovery, then design, then development” tells you nothing about what you’ll actually have in hand after each phase. Ask what document, prototype, or working build you receive at the end of each stage.

Not asking who’s actually assigned. A sales call staffed with senior people doesn’t guarantee senior people on the build. Ask directly, by name and experience level, who’s writing the code, and whether they’re dedicated to your project.

Skipping a defined QA stage entirely. If an agency can’t name its testing layers and can only offer “we test everything before launch,” there’s no defined QA process, just an assumption that bugs will surface eventually.

Decision Summary

Ready to See How This Applies to Your Build?

Book a discovery call, and we’ll walk through what Stage 1 looks like for your specific project. No commitment required to find out where your build would actually start.