Lead: definition, types and how to generate them in B2B

What is a lead? Definition in B2B marketing

In B2B marketing and sales, a lead is a contact – an individual or a company – who has either expressed interest in your offer (inbound signal: download, form, visit to the pricing page) or been identified as a potential target matching your ICP (outbound approach). In both cases, you have their contact details and a reason to justify sales action.

The definition varies across teams and organizations. HubSpot, Salesforce and most CRMs label any non-customer contact in their database a “lead”. Sales-led teams often consider that a lead only becomes a lead after a first positive interaction. What matters is aligning marketing and sales on a shared definition in your CRM, with explicit criteria for moving from one status to the next.

The complete reference table: from unknown contact to customer

Here is the complete reference framework of the terms used in a B2B pipeline, from unqualified contact to customer:

This framework deliberately includes the PQL (Product Qualified Lead), which is specific to SaaS: a trial user who has reached a key activation moment in the product (inviting a team, connecting an integration, using a paid feature). The PQL is often the most qualified lead in the SaaS pipeline – its conversion rate to paid exceeds 25-40% in the best product-led organizations.

B2B vs B2C leads: the key differences

In B2C, a lead is usually a consumer who has expressed individual interest (newsletter sign-up, quote request). The buying decision is often individual and fast.

In B2B, a lead almost always involves several stakeholders and a longer decision cycle. A single lead can represent a 500-employee company with 3 decision-makers involved, a 6-month tender process and a multi-year contract. That is why lead qualification in B2B is more structured and more critical: a poorly qualified B2B lead eats up weeks of sales time before being disqualified.

The different types of B2B leads

Cold, warm and hot leads: the categorization criteria

A lead’s temperature reflects its level of maturity in the buying cycle and directly determines the type of action to take:

• Cold lead: identified as an ICP target but no interaction with your brand. They don’t know you. The action: outbound prospecting (cold email, cold call, LinkedIn) with a message tailored to a detected signal.
• Warm lead: has shown a weak or moderate sign of interest – opening an email, visiting the website, downloading content. They know your brand but have not expressed an explicit need. The action: nurturing with educational content, retargeting, spaced-out follow-ups.
• Hot lead: actively engaged, with a need expressed or strongly implied. Repeat visits to the pricing page, demo request, positive reply to a cold email. The action: BANT qualification and booking a meeting as a priority.

MQL, SQL, PQL: when a lead changes status

The MQL (Marketing Qualified Lead) is a lead validated by marketing based on behavioral scoring criteria defined in the CRM. It is engaged enough to be handed over to Sales. An MQL does not mean the lead is ready to buy – it means it has reached an engagement threshold that justifies sales contact. To go further: Marketing Qualified Lead (MQL) explains the scoring criteria and the Marketing-to-Sales handover process.

The SQL (Sales Qualified Lead) is an MQL validated through a first sales conversation. An SDR has confirmed the need and identified the budget and decision-making authority. From the SQL stage onwards, an opportunity is opened in the CRM and the AE takes over for the active sales cycle.

The PQL (Product Qualified Lead) is specific to SaaS companies that offer a trial or freemium plan. It is a user who has reached a key activation moment in the product: they have proven they can get value from the tool. The PQL is the most qualified lead in the SaaS pipeline because they already have hands-on experience of the product and know what they are buying.

The SAL (Sales Accepted Lead) is an MQL formally accepted by Sales as justifying the opening of an opportunity. It is the KPI that measures Marketing/Sales alignment: an SAL rate < 75% signals that marketing qualification criteria and Sales expectations are not aligned.

The lead lifecycle: from acquisition to conversion

The stages of the lead lifecycle

The B2B lead lifecycle follows a path in which each stage must be deliberately managed:

• Acquisition: the lead enters your database through an inbound form (content, ads, webinar) or an outbound action (cold email, cold call, LinkedIn). Its initial status is ‘contact’ or ‘cold lead’.
• Enrichment: adding missing information using enrichment tools (Kaspr, Lusha, Dropcontact) – job title, company size, industry, direct phone number. An enriched lead is 2 to 3 times more likely to result in a meeting.
• Scoring: automatic assessment of the maturity level in the CRM based on behavior (pages visited, content downloaded, emails opened) and firmographic criteria (size, industry, job title).
• Nurturing: a sequence of content and follow-ups that matures the lead up to the MQL qualification threshold. This stage is often the most under-invested – 60 to 70% of leads enter nurturing and never come out for lack of a structured program.
• Qualification: a sales conversation (call, email, LinkedIn) that validates the BANT criteria and determines whether the lead moves to SQL status and enters an active sales cycle.
• Conversion: the sales cycle ends with a signed contract. The lead becomes a customer.

Lead nurturing: how to mature a cold lead

Nurturing is the strategy that maintains the relationship with leads who are not yet ready to buy, without closing pressure. The principle: regularly deliver value (educational content, industry benchmarks, case studies) to stay top of mind when the lead’s need becomes urgent.

An effective B2B nurturing program includes: content emails sent at regular intervals (1 to 2 per month), follow-ups triggered by signals (fundraising, hiring, job change), and invitations to events (webinars, conferences). The goal is not to sell at every touchpoint – it is to build the relationship that will make conversion feel natural when the time comes.

The marketing-to-sales handover: when should a lead be passed to Sales?

The handover is the critical moment when marketing passes a lead to Sales. Poorly managed, it is the main source of friction in B2B organizations. Leads passed on too early (immature MQLs) are rejected by Sales and end up in limbo. Leads passed on too late (SQL-ready but not transferred) are lost opportunities.

Best practice: define an SLA (Service Level Agreement) between marketing and sales that specifies the MQL -> SQL progression criteria, Sales’ follow-up time after handover (target: < 24h), and the process for returning rejected leads to nurturing. This SLA should be formalized in the CRM and measured every month.

How to generate qualified leads in B2B

Inbound lead generation

Inbound lead generation relies on creating content that draws prospects to you – SEO, blog, white papers, webinars, podcasts. Prospects come to you after searching for an answer to their problem.

The benefits of inbound: lower CPL over the long term, more qualified leads because they are already better informed, and lasting brand authority. The main drawback: a ramp-up period of 6 to 18 months before it produces a predictable flow of leads.

• SEO and content: CPL of €10 to €40 on well-targeted queries. A lasting asset that generates traffic with no additional marginal cost after the initial investment.
• LinkedIn Ads / Google Ads: immediate results, CPL of €40 to €200 depending on targeting. Useful to complement organic inbound or to quickly test a new segment.
• Lead magnet: high-value content (template, calculator, study) downloaded in exchange for an email address. Visitor -> lead conversion rate of 5 to 15% on a well-designed page.

Outbound lead generation

Outbound lead generation is proactive: you go after your prospects rather than waiting for them to come to you. It is the fastest channel for building pipeline: the first qualified leads arrive within 2 to 4 weeks. The outbound marketing strategy entry covers the channels, benchmarks and method in detail.

• Cold email: CPL of €5 to €30 (raw lead), €50 to €150 (MQL). High volume; personalization is needed to reach reply rates > 5%.
• Cold calling: direct qualification in 5 minutes. CPL including SDR time: €100 to €300 per MQL. The best channel for qualifying BANT quickly.
• LinkedIn outreach: complements cold email. Reply rates of 10 to 18% after connecting. Particularly effective with C-level targets who are hard to reach by phone.

The full-funnel approach to maximize volume and quality

The best-performing B2B sales organizations don’t choose between inbound and outbound. They combine them: inbound builds awareness and attracts better-informed leads, while outbound proactively targets strategic accounts that would never come on their own.

The full-funnel approach is structured as follows: SEO and content to feed the top of the funnel with inbound IQLs and MQLs, outbound (cold email + call + LinkedIn) to generate SQLs immediately, and retargeting of website visitors to convert warm leads who have not yet crossed the qualification threshold.

How to qualify and score your leads

Lead qualification is the process that determines whether a lead is a close enough match for your ICP and whether its maturity level justifies sales action. Scoring is the tool that automates this qualification in the CRM. Setting up lead scoring covers the complete method: firmographic + behavioral criteria, weighting, MQL -> SQL thresholds.

The most widely used qualification criteria in B2B are built around the BANT framework:

• Budget (B): does the lead have a budget allocated, or under discussion, for this type of solution?
• Authority (A): is the contact a decision-maker or involved in the buying decision?
• Need (N): have they expressed or shown a real need that your offer can meet?
• Timeline (T): do they have a defined decision horizon within the next 3 to 6 months?

A lead that meets at least 3 of these 4 criteria is an SQL. Below that, it stays in nurturing until one or more of the missing criteria mature.

Reference benchmark: the MQL -> SQL conversion rate averages between 13 and 27% in B2B (Baromètre Effinity 2026, Demand Gen Report 2025). Below 13%, marketing scoring is too permissive or the qualification criteria are poorly defined. Above 30%, the criteria may be too restrictive and opportunities are being lost.

CPL benchmarks by channel in French B2B, 2026

The benchmarks below are based on data from the Baromètre Effinity 2026, the Demand Gen Report 2025, 425ppm data and Oliverlist campaigns. ‘Raw lead’ CPL refers to the cost of obtaining a contact; ‘MQL’ CPL includes the additional qualification costs.

The right CPL is not the lowest – it is the one that delivers the best conversion rate to sales opportunity. An €800 CPL in ABM is fully justified if each lead generates a €200,000 deal. Conversely, a €20 CPL on cold email without ICP targeting produces such a low qualification rate that the real cost per SQL exceeds €300.

FAQ – Leads in B2B marketing

What is the difference between a lead and a prospect?

A lead is an identified contact who has shown a sign of interest or matches your ICP – without yet being qualified by sales. A prospect is a lead that has been assessed and validated: it matches the ICP, its need is plausible, and direct sales action is justified. Every prospect is a lead, but not every lead is a prospect yet. The distinction is operational: a lead can be handled through nurturing, while a prospect enters an active sales cycle.

What makes a good lead in B2B?

A good B2B lead is a contact who combines four characteristics: they match your ICP (size, industry, job title), they have expressed or shown a need for your type of solution, they have a budget or investment capacity consistent with your offer, and their decision horizon is compatible with your sales cycle. In scoring terms, an MQL with a score >= 70/100 on these criteria is generally considered a good lead.

How do you generate qualified leads in B2B?

The three approaches that work in 2026: SEO and content (lowest CPL over the long term, 6-18 month lead time), structured outbound (cold email + cold call + LinkedIn, results in 2-4 weeks, CPL varying with targeting quality), and LinkedIn Ads on highly targeted audiences (higher CPL but precision targeting). The most effective approach combines inbound and outbound: inbound to build authority and attract mature leads, outbound to fill the pipeline immediately with strategic targets.

What is the difference between an MQL and an SQL?

The Marketing Qualified Lead (MQL) is a lead validated by marketing based on behavioral scoring criteria: it has engaged enough with your content to justify sales contact. The SQL (Sales Qualified Lead) is an MQL that Sales has validated during a first conversation: the need is confirmed, the budget identified and decision-making authority present. The MQL -> SQL boundary is the most critical moment in the pipeline – it is the marketing/sales handover which, when poorly managed, creates friction and lost leads.

How much does a qualified lead cost in B2B?

CPL (cost per qualified lead) varies considerably by channel and industry. In French B2B, 2025-2026 benchmarks show: €25-80 via SEO/content, €50-150 via outbound cold email, €150-400 via LinkedIn Ads and €100-300 via cold calling. The average CPL across all industries in French B2B is around €93 for a raw lead and €200-400 for an SQL (source: Baromètre Effinity 2026). These benchmarks vary widely with average deal value: the higher the ACV, the higher the CPL that can be justified.

Sources

• HubSpot – What is a lead? (French)
  https://blog.hubspot.fr/marketing/definition-lead
• Salesforce – Lead management
  https://www.salesforce.com/resources/articles/lead-management/
• CNIL – Sales prospecting and personal data (French)
  https://www.cnil.fr/fr/la-prospection-commerciale
• LinkedIn – Marketing Qualified Lead
  https://business.linkedin.com/marketing-solutions/success/best-practices/marketing-qualified-lead