What Is WhatsApp for Business and How Does It Work?

What is WhatsApp for business and how does it work?

WhatsApp is where your customers already are. Yet many businesses are still unsure how to set up a business WhatsApp number, what exactly they need and which options they have. The good news: with a few smart steps you can have it organised quickly, set up professionally and ready to scale.

What exactly is a business WhatsApp number?

A business WhatsApp number is a phone number you use exclusively for customer contact via WhatsApp. No personal chats, no duplicate notifications on your own phone. You link this number to WhatsApp Business, which unlocks extra features: a business profile, automated replies, labels, a catalogue, team use with tooling, and reporting.

An important detail: WhatsApp works with real phone numbers. That can be a mobile number, but also a landline or an 085 number (a Dutch national, non-geographic number). A VoIP number works perfectly well, as long as it can receive a text message or voice call for WhatsApp verification. That means you can publish one professional number on your website, Google Business Profile and email signatures.

Two routes: Business App or Business Platform

There are two ways to use WhatsApp for business:

• The WhatsApp Business App: ideal for solo use or small teams with limited volumes.
• The WhatsApp Business Platform (API): designed for teams, automation, integrations and high volumes.

The right choice depends on the size of your organisation, your use cases and how much automation you want. If you want to get started without an IT project, go for the app. If you want SLAs, queues and CRM integration, choose the API through a WhatsApp partner.

Comparison at a glance

If you're not sure, you can start with the app and scale up to the API later. Just make sure the number remains the property of your business and is kept separate from personal accounts.

Benefits businesses notice straight away

Direct, informal communication is great, but you also want structure. WhatsApp Business gives you both.

• Faster responses and higher customer satisfaction
• Less pressure on telephony and email
• Teamwork with clear context
• A professional image
• Business profile: opening hours, address, website, email and description visible in the chat.
• Automated greeting: every new chat is welcomed instantly.
• Quick replies: short codes that insert longer answers, consistent in tone.
• Labels: an overview by stage or type of customer question, handy for follow-up.
• Product catalogue: showcase products or services without a separate link.

Want to make it even smarter? Connect WhatsApp to your CRM and have tickets created automatically. With the API, that is standard.

The number: options, verification and ownership

WhatsApp requires a number in E.164 format, so including the country code. In the Netherlands that starts with +31. Your options are:

• 06: mobile, recognisable, but sometimes less professional for B2B
• 085: a national number, scalable and independent of physical location
• Regional landline number: suits a local image
• 088: suitable for larger organisations

Make sure the number is available for one-time verification. If the text message doesn't arrive, choose a voice call on the verification screen. Temporarily switch off the IVR or set up a direct route so the code can be heard.

Not using VoIP yet, or need an extra number? You can arrange it in minutes with our VoIP solution. You keep ownership, can forward calls, and you're ready for verification. Take a look at our VoIP solutions.

Important tip: use a number that isn't linked to an existing WhatsApp account. Migrating is possible, but causes a temporary interruption. A fresh, dedicated number avoids the hassle.

Step by step: how to get started today

The steps below work for both the Business App and the API. The details differ per route, but the foundation is the same.

1. Choose your route: The app for a small team and low volumes. The API for teams, automation and integrations.

2. Request a business number: Choose an 085 or landline number through our VoIP solutions. Make sure hunt groups/IVR are temporarily switched off during verification.

3. Verify the number in WhatsApp: Open the WhatsApp Business App or start onboarding with a WhatsApp partner. Choose text message or voice. Note the code and complete verification.

4. Set up your business profile: Logo, description, opening hours, website, email, address. Add categories so people can find you.

5. Set up automation: Greeting, away message, business hours and quick replies. Start with 5 to 10 frequently asked questions.

6. Connect your channels: Add a WhatsApp button to your website, use QR codes at your front desk or on flyers, and connect Instagram and Facebook. Put a wa.me link in your email signature.

7. Organise team access: With the app, use linked devices and clear agreements. With the API, create roles, queues and SLAs.

8. Safeguard privacy and consent: Record opt-ins, restrict access to chats, set retention periods and document your procedures.

9. Measure and improve: Track response times, volumes, handling time and NPS/CSAT. Update your quick replies based on real questions.

Frequently asked questions from the field

Can I use a VoIP number?

Yes, as long as the number can receive a verification code by text message or voice call. For the API, voice verification is often the most reliable.

Can I use the same number for calls and WhatsApp?

Yes. Set the number up through VoIP, link it to WhatsApp and use call routing for incoming calls. During WhatsApp verification, briefly switch off any IVR or create a direct route.

What about multiple employees on one number?

The Business App supports this through linked devices, but control remains limited. For teams, the Business Platform route is better. There you get queues, assignment and reporting.

What's the difference between the green verification tick and a business name in WhatsApp?

Displaying your business name always works. The green verification tick is a separate status for well-known brands and requires additional checks. You don't need it to work professionally.

What does it cost?

The app is free. With the API, WhatsApp charges per conversation and your provider charges a fee. Expect low costs per conversation compared with telephony, especially at volume.

Tactics: combine WhatsApp with telephony and your website

WhatsApp isn't meant to replace your phone line. It complements it and takes the pressure off. Smart use shows in shorter waiting times and less strain on your call centre.

• Place a WhatsApp button next to the call button on your website.
• Use QR codes in shops, on buses or on invoices.
• Add "Call us or WhatsApp us" to your Google Business Profile.

Even more powerful: call deflection. Record an IVR option such as "Prefer to chat? Press 2 and we'll text you a WhatsApp link straight away." That way you shift simple questions to chat, while telephony has room for complex conversations. With our VoIP solutions you can set up routes like this in your phone system within minutes.

Working with templates, sessions and rules

With the Business App you can reply 1-to-1 as long as the customer has messaged you. On the Business Platform, clear rules apply:

• Within 24 hours of the customer's last message, you can reply freely.
• Outside that 24-hour window you need templates. These must be approved in advance, use the correct language and variables, and be written without spammy, ad-like content.

Broadly speaking there are four categories: marketing, authentication, utility and service. Quality matters. Keep messages relevant and concise, set the right expectations and respect opt-ins.

Reporting in the API shows you a quality score per template. Seeing a drop? Adjust the wording, reduce the frequency or improve your targeting.

Best practices for customer experience

A good WhatsApp channel feels human, fast and clear. You achieve that by combining technology with clear agreements.

• Reply within a few minutes during opening hours.
• Communicate the queue when it's busy, with realistic times.
• Include the agent's name and role in the first message.
• Keep context: summarise what you already know and confirm the next step.
• Use media wisely: photos, short videos, PDFs with instructions.

A chatbot can handle intake and collect data, but always offer an easy route to a person. Nothing is more frustrating than being stuck in a script.

Security, privacy and ownership

The GDPR applies to chat too. Work with policies and tooling that support auditing and permissions.

• Consent: record how someone opted in and offer a simple opt-out.
• Access: limit it to the employees who need it and log actions.
• Retention: archive in line with your policy and delete unnecessary data.
• Backups: make sure your number and data don't depend on a single personal device.

With a VoIP number, ownership stays with the organisation. If a colleague leaves the company, the channel simply keeps working. As it should.

Common misconceptions and solutions

• "WhatsApp only works with 06 mobile numbers.": 085 and landline numbers work too, as long as verification succeeds.
• "You can't scale.": with the Business Platform route you work with teams, queues and dashboards.
• "Verification by text message doesn't work.": choose voice; temporarily switch off the IVR or create a direct route.
• "We're not allowed to message customers proactively.": with a valid opt-in and approved templates you can, within clear categories.
• "It's not secure.": with roles, logging, retention periods and ownership of your number, it's actually far more manageable than personal WhatsApp.

Want to open a professional WhatsApp channel today? Start with a number that stays yours, ready for verification and scalable to manage. Request a number straight away through our VoIP solutions, link it to WhatsApp Business and give your customers the fast, personal service they expect.