Website, online shop or custom system: how to choose without paying twice

Almost every request we receive starts the same way: “we need a new website”. More often than not, what is missing is not a website. It is a shop that can handle stock and shipping properly, or a system that puts an end to the spreadsheet shared by six people. The difference between the three costs money — and whoever picks the wrong one usually pays twice: once for what they built, and again for what they had to rebuild.

The question first, the technology later

Before talking about WordPress, e-commerce or custom code, there is one question that settles almost everything: what does this project need to make happen over the next twelve months? Honest answers nearly always fall into one of three drawers.

• Being found and building trust. The deal is closed on the phone, in a meeting or in the physical shop, and the website exists so that conversation can start.
• Selling directly. The money comes in through the website, with a basket, payments, shipping and returns.
• Organising operations. The problem is no longer attracting customers: it is keeping up with the ones you have without losing information along the way.

The right drawer changes the budget, the timeline and — above all — who needs to be involved on the client’s side. That is why we always start here, not with a list of features.

Company website: to be found and to be credible

It is the cheapest of the three projects and the easiest to get wrong. A company website that does its job has one page per service, copy that answers real questions and a structure Google can read. It does not need expensive animations; it needs to load quickly and say clearly what the company does.

Two benchmarks we use as a yardstick: Core Web Vitals, which measure the real experience of whoever opens the page, and Google’s SEO starter guide, which is still the most honest document on the subject. If you want to see how we handle this part, it is described under sites and systems.

A word of warning: a beautiful company website does not generate demand on its own. Demand comes from going out to get it — and we wrote about that in Google Ads and SEO don’t compete.

Online shop: when the money comes in through the website

An online shop is not a website with buy buttons. It is an operation: catalogue, stock, shipping, payment methods, invoicing, returns and customer service. The technology is the easy part; what usually holds up the launch are the business rules nobody ever wrote down.

• Stock. Is it in an ERP, in Excel or in someone’s head? The answer defines half the integration.
• Shipping. Weight, volume, zones, free above what amount? Every rule is code.
• Payments. Multibanco and MB WAY (Portugal’s ATM-network and mobile payment methods) are not optional in Portugal; card and Apple Pay depend on your audience.
• Legal obligations. A link to the electronic Livro de Reclamações (Portugal’s official complaints book), a privacy policy that complies with the GDPR (the CNPD, the Portuguese data protection authority, publishes guidance) and clear pre-contractual information.

We build shops on WooCommerce when it makes sense to keep everything inside WordPress, and on dedicated platforms when the catalogue or the operation calls for it. The deciding factor is never fashion: it is who will run the shop day to day. Details under online shops.

Custom software and ERP: when the problem is no longer the website

There comes a point when a company stops needing more visits and starts needing less chaos. The signs are always the same: the same information written down in three places, nobody can say for sure how many orders are late, and there is one person whose main job is copying data from one place to another.

At that point the right investment is not a new website — it is a system that becomes the single source of truth, with everything else connecting to it. That is the work described under ERP and management systems, and it is also the most demanding on the client’s side: without someone internal making the decisions, an ERP does not get implemented.

A website that doesn’t know what it needs to make happen is an expensive brochure.

COSMOS Systems

The mistake that makes you pay twice

1. Choosing the platform before the goal. The decision becomes hostage to a tool nobody can justify six months later.
2. Building for the launch rather than for maintenance. If the people running the business cannot change a price or publish an article on their own, the website will age.
3. Leaving measurement until the end. Without conversions set up before the first euro is spent, every report is just an opinion.
4. Putting off the content. Structure without copy is a mock-up; it is content that brings in traffic and closes sales.

How we decide, in practice

1. We find out where customers come from today and what is holding growth back.
2. We write down what the project needs to make happen, in sentences that can be checked.
3. We choose the simplest thing that solves it — not the most impressive.
4. We set up measurement before launch, not after.
5. We hand over the dashboard so the client’s team can publish without having to call us.

And once it is live

Going live is the beginning, not the end. From there, the work becomes bringing in demand and measuring what it delivers: that is the COSMOS Growth side. And before investing in ads, it is worth reading why measurement comes first — it is the step most often skipped and the one that costs the most.

If you are not yet sure which drawer your project falls into, you do not have to decide alone: take the diagnostic and we will tell you where the leak is before proposing anything.