What is B2B data?

A working definition

B2B data is structured information about businesses and the professionals who work at them, sold to sales, marketing and revenue teams so they can find, qualify and contact the right people. Where a consumer marketer wants your personal interests, a B2B provider wants your job title, your employer, and a way to reach you at work.

In practice “B2B data” is a bundle of several distinct data types, and the providers differ a lot in which ones they do well.

The main types of B2B data

• Contact data, the core: full name, job title, seniority, verified work email, and phone numbers. Direct dials and mobile numbers are the hardest to get right and the most valuable; a phone-verified mobile is worth far more than a guessed switchboard number.
• Firmographic data, attributes of the company: industry, employee count, revenue, location, funding and corporate structure. This is how you build a target-account list before you look for individual contacts.
• Technographic data: the technology a company uses (its CRM, cloud provider, marketing stack). Useful for tools that only make sense alongside a specific platform.
• Intent data: behavioural signals that a company is actively researching a topic or category, so you can reach them while they’re in-market. ZoomInfo and Cognism both sell intent products.
• Website visitor identification: reverse-IP lookups that tell you which companies visited your site, even if they never filled in a form (ZoomInfo’s WebSights is an example).

Where providers get the data

Most providers blend several sources: publicly available information, licensed third-party data, partnerships, machine-learning models, and (increasingly) contributory or community data, where users share their own contact lists in exchange for access. Apollo describes its database as a “living data network” with over 2 million contributors. The collection method matters for compliance: contributory models have drawn the most scrutiny in Europe.

Database size is the headline vendors love to quote: ZoomInfo claims 500M+ professional profiles, Lusha claims 300M+ contacts, Apollo claims 210M+, but raw count tells you little about accuracy or how current the records are. A big database full of stale numbers is worse than a smaller, fresher one.

How B2B data is priced

Three models dominate, and they’re deliberately hard to compare:

• Credit-based: you spend credits to reveal contacts. The catch is that a phone reveal often costs far more than an email (10× on Lusha), so the headline price rarely reflects what you’ll actually pay.
• Per seat: a flat price per user, sometimes with credit caps on top (Apollo).
• Custom / sales-led: no public price; you book a demo and get quoted (Cognism, ZoomInfo), usually a five-figure annual contract.

We translate all of these into what you’d actually pay on our consolidated pricing table.

How to judge B2B data quality

Four things separate good data from a list of dead ends: accuracy (does the email bounce, does the number connect), coverage (does it have the regions and roles you sell to), freshness (how recently records were verified), and compliance (can you lawfully use it where you operate). The last one is not optional: in the UK and EU you need a lawful basis to process bought contact data, as the ICO sets out, and we cover the rules in our guide on whether buying B2B data is legal.

We score every provider on exactly these axes; see how we test, or start with our provider reviews.