Cookie

Store information in browsers to track user behaviour across visits and enable personalised experiences without requiring login for every interaction.

Cookie

Cookie

definition

Introduction

A cookie is a small file that a website stores on a visitor's device. It contains data about that visitor - typically their user ID, preferences, or behavioural information - that the website can retrieve on future visits. Cookies enable websites to 'remember' visitors and personalise their experience.

From a technical perspective, cookies are simple: a website sends instructions to your browser to save a small text file (usually under 4KB). When you revisit that website, your browser sends the cookie data back to the website, allowing it to identify you and recall your previous interactions. Without cookies, every visit would be treated as a completely new, anonymous visitor.

Types of Cookies Relevant to B2B Marketing

  • First-party cookies: set by the website you're visiting, used for authentication, preferences, and analytics
  • Third-party cookies: set by other domains (like advertising networks), used for cross-site tracking
  • Session cookies: expire when you close your browser
  • Persistent cookies: expire after a set period (days, months, or years)

In B2B marketing, cookies are especially valuable for tracking account-based marketing efforts. You can use cookies to identify when someone from a target account has visited your website, what pages they viewed, and how often they've returned. This information informs your sales outreach.

Why it matters

For B2B growth teams, cookies are how you track visitors across your website without requiring them to log in or identify themselves. Without cookies, you couldn't tell whether the 100 people who visited your pricing page yesterday included repeat visitors or entirely new prospects.

Cookies enable personalisation at scale. You can use cookie data to show different website content to different visitor segments: new visitors see educational content, returning visitors see case studies and pricing, and logged-in users see custom dashboards or personalised recommendations.

However, cookie regulations are changing rapidly. Privacy regulations like GDPR (Europe), CCPA (California), and others restrict how you can set and use cookies. Many organisations are moving toward cookieless solutions and first-party data strategies. Understanding cookies and their limitations is essential as the landscape evolves.

How to apply it

If you use Google Analytics or similar tools, understand that your analytics is powered by cookies. Your analytics vendor sets first-party cookies on your domain that track visitor behaviour. Ensure you have a clear privacy policy explaining that you use cookies for analytics and personalisation.

For account-based marketing, consider implementing first-party cookie tracking to identify when employees from target accounts visit your website. Tools like 6sense, Terminus, and similar ABM platforms use IP tracking and cookie technology to identify high-value accounts visiting your site, alerting your sales team.

Be aware of cookie consent requirements. In many jurisdictions, you must obtain explicit consent before setting non-essential cookies. Implement a cookie consent banner that explains what cookies you use and why. Respect user choices: if someone opts out of marketing cookies, don't set them.

Website personalisation with cookies

A B2B SaaS company used first-party cookies to personalise their website experience. First-time visitors saw a 'Getting Started' page with educational content. If the same visitor returned (detected via cookie) within 30 days, they saw a 'Compare Pricing' page instead. Returning visitors from target accounts saw custom homepage messaging about industry-specific use cases. This personalisation increased time on site by 40% compared to a control group without personalisation.

Account-based advertising with cookies

An enterprise software company used ABM technology to identify when employees from target accounts visited their website via cookie and IP tracking. When someone from a target account visited, they saw different ads on external websites showing that company's use case. This coordinated approach increased conversation rates for target accounts by 60% compared to non-target accounts.

Customer retention via cookie-based analytics

A consulting firm used cookies and analytics to track customer engagement after sale. They identified when existing customers hadn't visited their knowledge base or customer portal for 30 days, signalling potential at-risk relationships. The customer success team proactively reached out to these accounts, preventing churn and increasing upsell opportunities.

Keep learning

Growth leadership

How do you make all four engines work together instead of in isolation?

Explore playbooks

Data & dashboards

Data & dashboards

Build the dashboards and data pipelines that show your growth engines in one view so you can spot bottlenecks and make decisions in minutes, not meetings.

Growth team tools

Growth team tools

The wrong tools create friction. The right ones multiply your output without adding complexity. These are the tools I recommend for growth teams that move fast.

Review and plan next cycle

Review and plan next cycle

Analyse last cycle's results across all twelve metrics, identify the highest-leverage improvements, and set priorities that compound into the next period.

Revisit quarterly

Revisit quarterly

Pressure-test your strategy against market shifts, performance data, and team capacity so your direction stays relevant and ambitious.

Related books

No items found.

Related chapters

1

How to install Tag Manager and GA4

Install Google Tag Manager and Google Analytics 4 correctly. Get the right foundations in place before tracking any events or conversions.

5

How to filter internal traffic in GA4

Exclude your own IP address from Google Analytics 4. Keep your data accurate and free from internal traffic noise that skews metrics.

Wiki

Activity tracking

Log emails, calls, and meetings automatically to understand what drives deals forward and coach reps based on actual behaviour rather than guesswork.

Customer data platform

Unify customer data from every touchpoint to create complete profiles that power personalised experiences across marketing, sales, and product.

Sales tech stack

Assemble tools that manage pipeline, automate outreach, and track performance to help reps sell more efficiently and managers forecast accurately.

Multi-touch attribution

Distribute conversion credit across multiple touchpoints to recognise that customer journeys involve many interactions and channels working together.

Go-to-market strategy

Plan how you'll reach customers and generate revenue by choosing channels, pricing, and sales models that match your product and market reality.

Pirate metrics

Track your user journey through Acquisition, Activation, Retention, Referral, and Revenue to identify which stage constrains growth most.

Growth lever

Focus resources on high-impact business mechanisms where small improvements generate disproportionate results across the entire customer journey.

Growth engine

Build self-reinforcing systems across demand generation, funnel conversion, sales pipeline, and customer value that create continuous momentum.

Trigger

Define events that start automation workflows so the right message reaches people at the right moment based on their actual behaviour not arbitrary timing.

Standard Operating Procedure (SOP)

Document your repeatable processes in clear, step-by-step instructions that ensure consistency, enable delegation, and capture institutional knowledge.

Net Revenue Retention (NRR)

Track revenue growth from existing customers through expansion and contraction to prove your product delivers increasing value over time.

Inbound Marketing

Attract prospects through valuable content that solves real problems, building trust and generating qualified leads who approach you.

Monthly Recurring Revenue (MRR)

Track predictable monthly subscription revenue to monitor short-term growth trends and make faster decisions than waiting for annual revenue reports.

Value proposition

Articulate the specific outcome customers get from your solution to communicate why they should choose you over doing nothing or using alternatives.

Growth hacking

Deploy fast, low-cost experiments to discover scalable acquisition and retention tactics, learning through iteration rather than big bets.

Constraint

Identify and leverage limitations as forcing functions that drive creative problem-solving and strategic focus.

OMTM (One Metric That Matters)

Focus your entire organisation on the single metric that best predicts success at your current growth stage, avoiding distraction and misalignment.

Pipeline coverage

Calculate how much pipeline you need relative to quota to ensure you generate enough opportunities to hit revenue targets despite normal conversion rates.

Marketing stack

Organise the tools that capture leads, nurture prospects, and measure performance to automate repetitive work and connect customer data across systems.

Event tracking

Capture specific user actions in your product or website to understand behaviour patterns and measure whether changes improve outcomes or create friction.