We explain in plain language what a chatbot is, what types exist, how you set up a WhatsApp chatbot and what it brings to your business.
Updated: June 2026
The shortest answer to the question of what a chatbot is: a chatbot is software that converses with people to answer questions, start a task or gather information. The customer writes a message, the chatbot understands it and replies, just like talking in a chat window. Today chatbots run on websites, in messaging apps and especially on channels like WhatsApp; that is why 'WhatsApp chatbot' is a term you hear more and more. This guide explains what a chatbot is, the difference between rule-based and AI-based chatbots, how a WhatsApp chatbot is set up, the benefits for your business, which channels it works on and where to start.
A chatbot is software that communicates with the user through a written (sometimes spoken) conversation. Its purpose is to run a question-and-answer exchange as if talking to a person, to handle frequently recurring requests and to start a task when needed. The customer types 'Where is my order?'; the chatbot understands the question, finds the relevant information and replies. A simple chatbot handles only a few predefined questions, while an advanced chatbot can also understand and interpret freely written sentences. What they share is this: a chatbot exists to answer people's recurring daily questions automatically and instantly; it frees the team from routine and does not keep the customer waiting.
Chatbots fall roughly into two groups. A rule-based chatbot works according to a predefined flow: it recognises specific keywords, moves through buttons and menus and stays only within the scenarios it has been taught. For clear, narrowly defined questions it is fast and predictable; but it struggles when it meets an unexpected sentence. An AI-based chatbot, on the other hand, tries to understand freely written statements; it recognises different forms of the same question and holds a more natural conversation. The most useful AI chatbots are those trained on your own documents: they base their answers on your content, do not make up what they do not know and leave a topic to a human when they are unsure. Which type suits you depends on your business; in most cases a setup that combines the clarity of rules with the flexibility of AI gives the best result.
A WhatsApp chatbot is a chatbot that automatically handles messages arriving through WhatsApp. Setup proceeds in a few steps. First clarify which questions the chatbot will answer: gather the most common requests, recurring topics such as returns and shipping, and their ready-made replies. Then set up an official WhatsApp Business infrastructure; when you need several people to respond, connections to other systems, or automation, the WhatsApp Business API comes into play here. An important point: WhatsApp is a permission-based (opt-in) channel — the chatbot replies to the customer only because they messaged you or gave explicit consent, not to send unsolicited bulk messages. Finally, train the chatbot on your own documents so its answers rest on your brand's voice and your actual information. At Vendoor Digital we speed up this setup by taking your existing FAQs, policies and documents and turning them into an assistant that matches your brand's voice and cites its sources.
A well-set-up chatbot brings a business several concrete benefits. It answers frequently recurring questions instantly and outside business hours too; the customer does not wait, and the team need not field the same questions over and over. Requests gather in a single flow and none is left open. An AI chatbot trained on your own documents can show the source under each answer; so the information given is verifiable and trust grows. When the chatbot meets a topic it does not know or that falls outside its scope, it makes nothing up but hands it to your team along with the conversation history — so automation does not replace the human, it takes on the routine and lets the team focus on valuable work. The result is faster answers, fewer lost requests and a more orderly customer communication.
A chatbot is not tied to one place; it works on the channel where your customers are. The three most common channels are: your website — the visitor gets an instant answer through a chat window while browsing; WhatsApp — you offer support in the messaging app the customer already uses every day; and the phone — through voice-based answer flows. Set up correctly, the same chatbot gives consistent answers across several channels: whichever channel the customer writes from, they receive the same information in the same voice. The customer assistant we set up at Vendoor Digital works exactly like this — it deploys a single assistant across WhatsApp, website and phone, giving consistent, source-cited answers on every channel.
A good start comes not with a large project but with a single concrete need. First decide which questions you want the chatbot to answer; these are usually a few of the most common ones. Then gather the ready-made replies to those questions and the documents you have (FAQs, policies, materials) — that is the real source the chatbot is trained on. Next decide which channel to begin with; for most businesses WhatsApp or the website is a sensible first step. Beginning with a small, clearly defined scope keeps the risk low; as the chatbot runs reliably, you add new questions and channels. You can find the details of how to set up WhatsApp as a support channel in our WhatsApp customer service guide. To see how we work and what we cover, you can also take a look at our customer assistants page.
Not exactly. Every AI assistant can work as a chatbot, but not every chatbot is AI-based. A rule-based chatbot only follows predefined flows; an AI assistant understands freely written questions, is trained on your own documents and shows the source of its answer. Which one suits your business we decide together.
No. WhatsApp is a permission-based (opt-in) channel: the chatbot replies to the customer only because they messaged you or gave explicit consent. Unsolicited bulk marketing messages violate WhatsApp's policies; the correct use is conversations the customer started or approved.
An assistant trained on your own documents rests only on your content and does not make up what it does not know. A topic it is unsure about or that falls outside its scope it hands to your team along with the conversation history; the customer is not left without an answer, and no wrong information goes to the customer.
Yes. A single assistant can be deployed on WhatsApp, your website and the phone; whichever channel the customer writes from, they receive the same consistent, source-cited answers. Which channels you begin with we decide together according to your needs.
Share your documents; let's launch together a customer assistant that works on WhatsApp, web and phone, cites its sources and hands off to a human when needed.
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