The right decisions before development
The choice of platform, modules and integrations decides much of the store’s development and maintenance cost. In a finished store these decisions are far more expensive to change than on paper.
We advise before the project and throughout it: which platform and modules to choose, which payment and delivery methods to add, how to structure product data and how to integrate the store with your PIM, warehouse and POS systems.
Accessibility, SEO, AI search, data security and campaign peak load are planned in from the start, so they don’t have to be fixed expensively later.
The choice of platform, modules and integrations decides much of the store’s development and maintenance cost. In a finished store these decisions are far more expensive to change than on paper.
New questions come up during development: payment methods, markets and campaigns are added. We are at your side throughout the project, not just at the start.
We work with several e-commerce platforms, so we recommend the solution that fits your product range, markets and budget.


Before development starts, we lay the store’s foundations: what it runs on, what it can do and what it talks to.
During development we make sure the store meets the requirements and holds up even when traffic is at its highest.
Magento is one of the world's leading e-commerce platforms. It scales with your sales and suits stores with large product ranges.
Adobe Commerce is the commercial edition of Magento, with B2B features and cloud hosting. It suits large stores in several markets.
MedusaJS is an open-source headless e-commerce platform built on Node.js that can be shaped exactly around your business logic.
WooCommerce is the online store solution for WordPress. It suits small and medium-sized stores where content and sales go hand in hand.
We connect the store to a content management system, so marketing can manage campaigns, banners and pages without a developer.
All product information in one place: product cards, required fields and completeness checks. Only complete products go on sale.
Akeneo PIM handles product information only. We set it up by product family and connect it to the ERP and the online store.
AI-based product search understands the shopper's question, not just keywords, and finds the right product without its exact name.
We connect the online store to the warehouse management system, so stock levels, picking and delivery move between the systems automatically.
Some shoppers now start their journey with an AI assistant rather than a search engine. We help prepare your store so that AI search finds your products with the right price and stock, and AI agents can work with your store. Not every store needs everything at once: together we work out where to start.
AI assistants build their answers from information on the web. Correct product information, a fast store and clear content help your products into their recommendations.
Structured data, product feeds and llms.txt give AI systems your products’ prices, availability and attributes in an unambiguous form.
An MCP server and WebMCP let an AI agent search your store, add to the cart and check order status in an agreed and secure way.
If the store is already running, we start with an audit. We review speed, the customer journey, accessibility, SEO, security and integrations, and give you a written overview of what is in order, what needs fixing and what is critical.
The audit gives you a prioritised list of work, so you know where to put the money first.
We build an online store that supports sales growth.
Ordering portals, price and customer-group rules, and integrations for B2B sales.
We map the business processes and requirements before we start designing the solution.
We connect the store to your PIM, warehouse, POS systems and ERP.
A store everyone can use, in line with WCAG and the EAA.
We have extensive experience in developing IT software and e-commerce solutions for businesses, spanning from the financial sector to insurance and pharmaceutical industries. We serve as a long-term partner for both large corporations and rapidly growing startups.
Apotheka: one platform for five pharmacy and beauty stores in three countriesOne Magento 2 and React platform for five pharmacy and beauty stores in three countries, including secure sales of prescription medicines.Read more
Apotheka (2020)Apotheka’s e-commerce solution was becoming technologically obsolete and needed a thorough rethink.Read more
Rahva RaamatOpus designed and developed a mobile app and online store recognised as Estonia’s best e-commerce solution.Read more
ElisaOpus created a technical solution for Elisa’s website, online store and self-service portal. Our team also works with Elisa to improve the site every day.Read moreYes. Consulting can be ordered on its own, for example to choose a platform or audit an existing store, or as part of a development project.
No. Consulting gives you a written recommendation that can also be used with another developer.
Yes. We compare providers by your markets, customers and order volumes, and plan the integrations.
Yes. Since 2025 the European Accessibility Act (EAA) also applies to e-commerce. In a new store we build the requirements in from the start; in an existing one we begin with an audit.
If your customers ask AI assistants about products, yes. The basis is the same as for SEO: correct product information, structured data and a fast store. Product feeds and llms.txt help on top of that.
MCP (Model Context Protocol) is an open standard that lets an AI assistant query your system and carry out actions. WebMCP brings the same idea to the web page: an AI agent in the browser uses the store’s functions in a formally described way. Both are still evolving, so we recommend them when your customers or partners have a real need.
Load tests before the campaign, caching and hosting that scales with the load. Bigger changes to the store are best held back until the campaign is over.
The price depends on the scope of the questions and the complexity of the store. We give an exact estimate after a short kick-off meeting.
We have your back when it comes to web development, giving you the freedom to focus on building and growing your company.

Expert explains: today’s e-commerce success is no longer defined by bells and whistlesThe choice of platform on which to build an online store affects a company for years. According to Margus Eha, CEO of Opus, what matters today is no longer how much ready-made functionality a platform offers, but how quickly it can adapt to changing business needs.Read more
Margus Eha: AI can put your online store on the list – but that alone is already yesterday’s newsIn recent years, online retailers have focused on making sure their products can be found in ChatGPT and other AI services. But according to Margus Eha, CEO of Opus, a developer of large-scale e-commerce platforms, the next phase has already begun: online stores must increasingly think about how to provide AI with information on exactly which products are in stock, when a specific item could reach a particular customer, and, if necessary, even which shelf it is located on in a physical store.Read more
Are you overpaying for Magento? The free version could be the smarter choice for your online storeWhen choosing an e-commerce platform, price is one of the most important decision criteria – so it’s essential to assess carefully whether the investment will actually pay off. That’s why online store owners should honestly ask themselves whether it makes sense to pay licence fees for features that could also be achieved with an open-source platform.Read more