Skip to Main Content
Back to blog

// GUIDE · WEB DEVELOPMENT · PRODUCT TYPE

Brochure site, web system or platform — what does your business actually need?

"Building a website" is five different products. Whoever picks the wrong type pays twice: once for what was built, and once for what was needed.

  • 11 min read
  • By OneZero

// THE SHORT ANSWER

In one paragraph

The right type is set by what the visitor has to do, not by how many screens there are. If they only read and get in touch — it is a brochure site or a landing page. If they buy from a catalogue — a store. If they log in, enter data and work inside a process that persists over time — a web system. And if at least two sides meet through you, with payments, vetting and ratings — a platform. Moving from type to type adds identified users, permissions, data that is written and not just read, and integrations — and that, more than the design, is what widens the scope. Define the type before you ask for a quote — not after.

// TL;DR

The short version — the five types

TypeWhat the visitor doesWhat widens the scope
Brochure siteReads, compares, gets in touchAmount of content, number of languages, self-service content management
Landing pageGets one message and takes one actionNumber of variants, measurement, connection to marketing tools
Online storePicks from a catalogue, pays, gets a deliveryCatalogue size, payment, shipping, inventory, connection to existing systems
Web systemLogs in, enters data and works in a processRoles and permissions, entities and processes, integrations, data migration
PlatformTwo or more sides meet through youEverything in a web system, plus vetting each side, payments, ratings and operations

Someone who tells a software house "I need a website" might mean a half-page with a form, or a system that employees and customers will work in every day. That difference sets the team, the process and the scope, so it is better to discover it before the quote and not after. This guide helps you define which product you are building. It does not replace the decision on whether to build an app, Web or No-Code at all, and it does not explain what sets a system's budget — there are separate guides for both. App, Web or No-Code: how to decide

Five products under the name "website"

The following split is based on the type table on the web development service page, and adds for each type the question it answers and the sign that you have already outgrown it.

TypeThe question it answersA sign you have outgrown it
Brochure site"Who are you, what do you offer, and how do I get in touch?" — a professional presence and a presentation of servicesCustomers ask to log in, see a status or upload documents
Landing page / campaign"Does the visitor who arrived from this ad take the one action we asked for?"You need to explain a lot, serve several audiences or keep content that is updated
Online store"How do we sell products directly, including catalogue, cart, payment and shipping?"The sale depends on a quote, an approval or a process that cannot be described as a shopping cart
Web system"How do identified people do work in a process that persists?" — a customer portal, an admin system, an internal toolA second side (suppliers, partners, sellers) wants to join and act on its own
Platform / marketplace"How do two or more sides meet, communicate and transact through us?"This is the widest type; here the sign is that what is missing is operations and growth, not another feature
If it is hard to choose between two adjacent types, the answer is usually in the last column: does the need that marks the next type already exist in your business?

The full type table, including how we build each one, is on the service page. Websites and web systems — the product types

Seven questions that sort a need into a type

Answer according to how the business works today or should work on launch day, not how it will look in three years. Each "yes" points to the type in the second column:

QuestionIf the answer is "yes"
Does the visitor only read and get in touch, without logging in?Brochure site or landing page
Is there one message, one audience and one action — usually from a paid campaign?Landing page
Do you sell products from a catalogue with a cart and payment?Online store
Do users need to log in and see only their own information?Web system
Do users enter data or advance a process that is saved from visit to visit (status, approvals, documents)?Web system
Does the product need to talk to existing systems (CRM, accounting, inventory)?A connected store or a web system — depending on the depth of the connection
Is a second side (suppliers, sellers, partners) supposed to join and act on its own, with you in the middle?Platform
Two "yes" answers from two different types are not a contradiction. They mean the product is composite, and that it is worth starting from the lowest type that proves value — and deciding in advance what the next step is.

When a site becomes a system

The line between a "site" and a "system" is where the product starts to remember things. A brochure site shows the same content to everyone; a system knows who the user is, what they entered yesterday and what they are allowed to see. Four signs say the line has been crossed:

  • Identified users — there is a login, and information one person must not see in another's account.
  • Roles — not everyone may do the same thing (customer, employee, manager, supplier).
  • Data that is written — the product does not only display content the team uploads, but stores what users do.
  • A process that continues — an action starts today and ends in a few days, with statuses, notifications and approvals.

Once any of them is present, you are building software and not content: there is a database, permissions, testing that covers processes and not only pages, and a need for ongoing maintenance. What a system includes beyond its screens — in the anatomy section of the software development page. Custom software development — the anatomy of a system

What widens the scope in each type

Still no numbers, but in order of weight: these are the things a vendor will ask about for each type, and that you should arrive with an answer to.

TypeScope driversWhat to prepare before a call
Brochure siteNumber of page types (not number of pages), languages, self-service content management, existing or new branding, connection to marketing toolsList of services, who writes the content, who will update it after launch
Landing pageNumber of variants to test, measurement events, connection to forms and the CRMThe one action, the traffic source, and what counts as a conversion
Online storeCatalogue size and product complexity (variants, bundles), payment methods, shipping, inventory, connection to accountingWhere inventory is managed today, who handles returns, which documents the customer receives
Web systemNumber of roles, number of entities (customer, order, document), processes and statuses, integrations, migrating data from an existing system, training and rolloutWho the users are, what each role does, how the process works today (even in a spreadsheet), and what happens when it stalls
PlatformEverything in a web system, plus: a separate experience for each side, vetting of suppliers or sellers, payments between the sides, ratings, trust mechanisms and operations (back office)Which side joins first and why, what makes the other side stay, and who operates it day to day
Once you reach the system or platform type, the design is no longer the main scope driver. The roles, the processes and the integrations are.

How an estimate for a web system is built from these drivers — and which costs are hard to see at the start — is covered in the budget guide. Web system budget: what to define before asking for a quote

Three examples from published projects

The following three are web products you can open today. None of them is a brochure site, which is why they show well where the line falls. The details here are only what the case-study pages themselves present.

Michrazit is a tender platform for private construction with two types of users — homeowners and suppliers — and each is onboarded, acts and sees the tender differently. That is the classic sign of a platform: a second side acting on its own, and a defined process connecting them, from tender to contract. Case study: Michrazit

JUSK is an employee onboarding system: forms, training, tests and mandatory tasks in one path, with access opening only after the employee completes what is required. It has a separate experience for the employee and for the team that manages it. It is a web system and not a platform: it has roles and a continuing process, but no two-sided market. Case study: JUSK

KICK AI is an interactive gaming platform connected to live football broadcasts: users take part in short rounds during the match and get an immediate result. Here the deciding sign is time — a web product that responds in real time, with an admin system behind it, is software in every sense, not a page being served. Case study: KICK AI

A marked example: "a website with appointment booking"

QuestionAnswer (example)What it means for the type
What does the visitor do?Reads about the doctors and services, and requests an appointmentA brochure site, with one prominent action
How is the appointment set?A form, and the front desk calls backNo system needed; the form connects to a tool you already have
And if the appointment is set automatically against the doctors' calendars?Needs real-time availability, preventing double booking and sending remindersThis is already a web system: data that is written, a calendar connection, a continuing process
And if patients want to see history and documents?Login, permissions and the privacy of medical informationA web system with security and privacy requirements that must be defined up front and checked with legal counsel
The same request, with four different answers, opens the way to four different products. What separates them is not the look but the question of what is stored, by whom and under what permission.

What we do at this stage

In the discovery meeting we start from this question: which of the types are you building, and what from the next type is truly needed already in the first version. Then we define the scope drivers of the chosen type, and only then build. Our service for websites and web systems describes the types and how we build each of them. Websites and web systems

When the product is a system with roles, processes and integrations, it is built as software development in every sense — with the processes specified, a data model and permissions defined before the code. Custom software development — the anatomy of a system

And for every type, even a simple brochure site, the user experience decides whether the visitor takes the action. Experience and interface design happen before development, not during it. UI/UX design

// FAQ

Frequently asked questions

  • What is the difference between a brochure site and a web system?+
    A brochure site shows the same content to every visitor, so the content can be managed from a content management system. A web system identifies users, distinguishes between roles, stores data users enter and advances a process over time. The line falls where the product starts to remember and to permit: with a login, permissions and written data, it is software development and not website building.
  • How do I know whether I need a site or a web system?+
    You ask what the visitor needs to do. If they only read and get in touch — a site. If they need to log in, see personal information, enter data or advance a continuing process — a system. Four signs point to a system: identified users, different roles, data that is written and a process that lasts several days. If any of them exists already on launch day, define the product as a system.
  • What is the difference between a web system and a platform?+
    A web system serves one organisation and its users: employees, customers or partners working inside the organisation's process. A platform connects two or more sides that act on their own — for example suppliers and customers — so vetting each side, payments between them, ratings and operations are added. Every platform is also a web system, but not the other way around.
  • Is a landing page enough instead of a full site?+
    When there is one message, one audience and one action — usually when traffic is sent to it from an ad — yes, and sometimes it is better because it is focused and easy to measure and A/B test. It is less suitable when a lot needs explaining, several audiences need serving or content needs to be kept up to date. In that case a brochure site is the base, with landing pages beside it per campaign.
  • Can I start with a brochure site and move on to a system?+
    You can, but it is worth deciding on it up front. If you plan a system as a next step, the site can be built so that the system's areas are built next to it on the same infrastructure and with the same branding. What is not advisable is to add login and permissions gradually onto a site that was not designed for it — that is usually more costly than setting the direction at the start.
  • What should I prepare before asking for a quote for a site or a system?+
    Four things: the type you think you are building, the main action the user needs to take, who the users are and which roles exist, and how the process works today — even if it is in a spreadsheet and WhatsApp. Plus a list of the systems the product is meant to connect to. These are what the vendor will ask about, and they set the scope more than the design does.

Last reviewed:

By OneZero

// LET'S TALK

Building an MVP, SaaS, marketplace or AI-mobile product?

Make the architecture decision before you pick a framework by hype — it affects hiring, speed, burn, maintenance, scalability and future rewrites.