Marketing Glossary
Clear, jargon-free definitions for 31 essential marketing, SEO, and advertising terms. Updated for 2026.
31 terms
A/B Testing
Comparing two versions of a page, email, or ad to determine which performs better.
Attribution
The process of identifying which marketing touchpoints contribute to a conversion.
Backlinks
Hyperlinks from external websites pointing to your site — a key SEO ranking signal.
Bounce Rate
The percentage of visitors who leave a website after viewing only one page.
CAC
Customer Acquisition Cost — total cost to acquire one paying customer.
Content Marketing
Creating and distributing valuable content to attract and engage a target audience.
Conversion Rate
The percentage of visitors who complete a desired action (purchase, signup, etc.).
Conversion Rate Optimization
The systematic process of increasing the percentage of visitors who take a desired action.
CPA
Cost Per Acquisition — the average cost to acquire one customer or lead.
CPC
Cost Per Click — the amount paid each time someone clicks on a paid advertisement.
CPM
Cost Per Mille — the cost per 1,000 ad impressions.
CTR
Click-Through Rate — the percentage of people who click on a link after seeing it.
Customer Lifetime Value
The total revenue a business can expect from a single customer over the entire relationship.
Demand Generation
Marketing activities that create awareness and interest in a product or service.
Domain Authority
A third-party score (1–100) predicting how likely a domain is to rank in search engines.
First-Party Data
Data collected directly from your own customers and website visitors.
Influencer Marketing
Partnering with individuals who have engaged audiences to promote products or services.
Keyword Difficulty
A score estimating how hard it is to rank for a specific keyword in organic search.
Lead Generation
The process of attracting and capturing interest from potential customers.
Marketing Automation
Using software to automate repetitive marketing tasks such as emails, social posts, and lead nurturing.
Marketing Funnel
A framework describing the customer journey from awareness to purchase.
Organic Traffic
Website visitors who arrive via unpaid search engine results.
Performance Marketing
Advertising where brands pay only when a specific action (click, lead, sale) occurs.
Programmatic Advertising
Automated buying and selling of digital ad space using algorithms and real-time bidding.
Retargeting
Showing ads to users who have previously visited your website or engaged with your brand.
ROAS
Return On Ad Spend — revenue earned for every dollar spent on advertising.
ROI
Return on Investment — net profit divided by the cost of the investment, expressed as a percentage.
Search Intent
The underlying reason or goal behind a user's search query.
SEO
Search Engine Optimisation — improving a website's visibility in organic search results.
SERP
Search Engine Results Page — the page Google (or any search engine) returns in response to a query.
Zero-Party Data
Data a customer intentionally and proactively shares with a brand.