Why an agency spent a decade building stores, then built a product

Most software for ecommerce is built by people who studied merchants. Proa is built by people who billed them, for over a decade, and had to answer for the results.

Vasta is an agency. For more than ten years we designed, built, and optimized online stores, serving 400+ Shopify entrepreneurs along the way. And year after year, across wildly different stores, the same three problems kept coming back.

The same three problems, every time

Pages that fight the brand. Every store accumulates pages that look like they came from somewhere else: a template here, a rushed campaign there. Keeping a store visually coherent is constant, expensive, manual work, and it is the first thing to slip when a deadline arrives.

Changes that are scary to ship. On most stores, changing a live page means touching the theme. Themes have deploy processes, shared code, and a long memory of past accidents. So changes queue up, wait for the developer, and ship in batches, which is the opposite of how experimentation wants to work.

Nobody knows what worked. A redesign goes live, revenue wiggles the way revenue always wiggles, and everyone projects their hopes onto the wiggle. The agency says the redesign worked. The ad platform says the campaign worked. The merchant pays both.

Turning a practice into software

For a decade, our answers to those problems were manual: brand guidelines enforced by review, changes shipped carefully by hand, results argued about in meetings. The practice worked, but it did not scale past the hours in a day.

Proa is that practice turned into software, piece by piece. The brand discipline became Studio, which learns a store's identity once and generates pages that obey it. The careful shipping became the Runtime script, which delivers any change reversibly, with no theme deploys. The arguments about results became Experiments, which lets orders settle the question. The trained eye became Insights, evidence-backed store audits. And the post-purchase playbook became Offer Engine, which is already in production.

Why this shapes the product

Being agency-born gives Proa a specific temperament, and you will see it everywhere in the product.

It is why everything is reversible: agencies learn from accidents on other people's stores, and the undo button is how trust survives them. It is why measurement is in orders and revenue rather than clicks: clients do not pay invoices with click-through rates. And it is why this site publishes no invented logos, ratings, or testimonials: the agency's house rule is no proof, no public claim, and the product inherits it.

The agency is still here, still running stores. Proa's roadmap is not guessed from dashboards; it is lived weekly on real storefronts. That is the plan, and honestly, it is the only part of the last decade we automated reluctantly.

If any of those three problems sound like your store, we should talk.