How to choose an e-commerce agency: what to evaluate before hiring
Choosing the wrong agency is one of the most expensive decisions an e-commerce can make. Projects that delay months, deliveries with poor performance, non-existent support after launch, and ultimately the need to redo everything with another partner. This guide covers what to evaluate, what to ask and which signals indicate an agency truly understands e-commerce.
Specialization vs generalism
An agency that does e-commerce, institutional websites, apps, branding and social media probably does none of them exceptionally well. E-commerce has its own complexity: ERP integration, payment gateways, logistics, technical SEO, performance, checkout and catalog. Prefer agencies specialized in e-commerce that work with the platforms you use or plan to use. Ask how many e-commerce projects they delivered in the last year and request a portfolio with results.
Verifiable technical competence
Do not accept just a pretty portfolio. Verify: run Lighthouse on the agency's portfolio stores (scores below 50 are a red flag), check if sites have green Core Web Vitals on PageSpeed Insights, see if they use structured data correctly (test with Google's Rich Results Test), ask about their deploy and versioning process (if they do not use Git, run), and ask them to explain how they handle platform migrations without losing SEO.
Questions that reveal maturity
Ask these questions in the initial meeting: How do you measure the success of an e-commerce project? (good answer: performance metrics, conversion and revenue; bad answer: on-time deliveries). What is your QA process before launch? (good answer: technical checklist, load testing, SEO validation; bad answer: we test in production). How does post-launch support work? (good answer: defined SLA, clear communication channel, scheduled maintenance; bad answer: we handle things as they come up).
Contract models and pricing
The most common models are: fixed project (defined scope, fixed price, works for implementations with clear requirements), monthly retainer (monthly hours for maintenance and evolution, ideal for growing operations), and hybrid (implementation project + maintenance retainer). Distrust quotes far below market rate. A professional VTEX implementation does not cost $3K. A custom Shopify store does not cost $1K. Very low prices usually mean superficial deliveries, future rework and higher total cost in the long run.
What a good agency does differently
A mature e-commerce agency: delivers sites with green Core Web Vitals, has a migration process with zero SEO loss, monitors post-launch performance, provides documented handoff to the internal team, recommends the right platform (not the one with the highest commission), and talks about business results, not just technical deliveries. At odus, every project follows these principles. If you want to understand how we work, contact us for a no-commitment conversation.