Plain-language definitions—and why each term matters to advertisers.
A method of comparing two versions of a webpage, email, or ad to see which performs better.
Why it matters to advertisers: It replaces guesswork with evidence, helping advertisers improve results without necessarily increasing budget.
A set of rules a platform uses to decide which ads or content to show, to whom, and in what order.
Why it matters to advertisers: Understanding algorithms helps advertisers create relevant campaigns that earn better placement and use media dollars more efficiently.
Data collected to measure audience behavior and campaign performance.
Why it matters to advertisers: Analytics shows what is working, what is not, and where an advertiser should adjust strategy or spending.
Marketing products or services from one business to another business.
Why it matters to advertisers: B2B buying cycles are often longer and involve multiple decision-makers, so advertisers need different messages, channels, and follow-up plans.
Marketing products or services directly to individual consumers.
Why it matters to advertisers: B2C campaigns often need to create interest and prompt action quickly, making audience insight, timing, and creative especially important.
The percentage of visits in which someone leaves a webpage without meaningful interaction.
Why it matters to advertisers: A high bounce rate can signal a mismatch between the ad and landing page, slow load times, or an unclear next step—all of which can waste ad spend.
A prompt that tells someone what to do next, such as “Learn More,” “Call Today,” or “Request a Quote.”
Why it matters to advertisers: A clear CTA turns attention into action and makes it easier to measure whether advertising is moving people toward a business goal.
The percentage of impressions that result in a click.
Why it matters to advertisers: CTR helps advertisers judge whether an ad’s message, offer, and creative are compelling enough to make people respond.
The percentage of users who complete a desired action, such as making a purchase or submitting a form.
Why it matters to advertisers: Conversion rate shows whether traffic is becoming real business activity and helps identify opportunities to improve landing pages or offers.
The average amount an advertiser pays for each click on an ad.
Why it matters to advertisers: CPC helps advertisers understand the cost of driving traffic and compare the efficiency of audiences, keywords, creative, and platforms.
The estimated total value a customer brings to a business over the entire relationship.
Why it matters to advertisers: CLV helps advertisers decide how much they can reasonably spend to acquire and retain a customer—not just win one sale.
Visual ads—such as banners, images, or video—shown across websites and apps.
Why it matters to advertisers: Display advertising helps build awareness, reach defined audiences, and stay visible beyond search and social platforms.
A scheduled series of automated messages, usually emails, sent over time based on timing or user behavior.
Why it matters to advertisers: Drip campaigns help advertisers nurture interest consistently and guide prospects toward a decision without relying on one message.
The percentage of people who interact with content through actions such as likes, comments, shares, saves, or clicks.
Why it matters to advertisers: Engagement rate helps advertisers understand whether content is connecting with the audience, not simply appearing on screen.
Using email to communicate offers, news, education, and follow-up messages to subscribers or customers.
Why it matters to advertisers: Email gives advertisers a direct, owned channel for nurturing leads, encouraging repeat business, and staying connected.
The stages people move through from first becoming aware of a business to considering it and taking action.
Why it matters to advertisers: The funnel helps advertisers choose the right message and measurement for each stage instead of expecting every ad to create an immediate sale.
A word or phrase preceded by # that categorizes social content and may make it easier to discover.
Why it matters to advertisers: Relevant hashtags can add context and improve discoverability, although their value varies by platform and should not replace strong content.
A visual report showing where users click, scroll, or spend attention on a webpage.
Why it matters to advertisers: Heatmaps help advertisers improve landing-page layout, find friction, and place important information where visitors are most likely to see it.
The total number of times an ad or piece of content is displayed; one person may account for multiple impressions.
Why it matters to advertisers: Impressions show the scale of ad delivery and, when compared with reach, help advertisers understand how often people may be seeing the message.
Partnering with a creator or trusted personality to introduce a brand, product, or service to their audience.
Why it matters to advertisers: The right partnership can lend credibility and reach a community through a voice it already trusts.
A word or phrase connected to what people search for online or to the context of digital content.
Why it matters to advertisers: Keywords help advertisers align ads and website content with customer intent, improving relevance and the chance of reaching people at the right moment.
A specific measurement used to track progress toward a business or campaign objective.
Why it matters to advertisers: KPIs keep advertisers focused on the outcomes that matter instead of treating every available metric as equally important.
A focused webpage built for a specific campaign, audience, or offer.
Why it matters to advertisers: A strong landing page continues the ad’s message, reduces distractions, and makes it easier for visitors to take the intended action.
The process of attracting people and collecting information from those who show interest in a product or service.
Why it matters to advertisers: Lead generation gives advertisers identifiable prospects who can be qualified, nurtured, and connected with sales.
Software and rules used to automate repetitive marketing tasks and personalized follow-up.
Why it matters to advertisers: Automation helps advertisers respond consistently, scale campaigns, and move leads forward without manually managing every interaction.
Information in a webpage’s code that helps search engines and platforms understand and preview the page.
Why it matters to advertisers: Clear title and description tags can improve how a page appears in search results and may increase qualified clicks.
Website visits that come from unpaid search results rather than paid ads.
Why it matters to advertisers: Organic traffic can provide ongoing visibility and reduce dependence on paid media, while also revealing what information audiences actively seek.
Marketing that proactively places a message in front of an audience, including television, direct mail, cold outreach, and many types of digital advertising.
Why it matters to advertisers: Outbound tactics help advertisers create awareness and reach people who may not yet be searching for the business.
An advertising model in which the advertiser pays when someone clicks an ad.
Why it matters to advertisers: PPC can capture active demand and offers direct control over targeting, budget, and performance measurement.
A research-based profile representing an important type of ideal customer, including needs, behaviors, motivations, and barriers.
Why it matters to advertisers: Personas help advertisers create more relevant messaging and choose channels based on real audience needs rather than assumptions.
The automated buying and placement of digital ads using data and technology to reach selected audiences.
Why it matters to advertisers: Programmatic advertising can extend reach across many websites, apps, streaming platforms, and devices while allowing precise targeting and optimization.
A prospect who has shown interest and meets agreed-upon criteria suggesting a reasonable fit or likelihood to buy.
Why it matters to advertisers: Tracking qualified leads helps advertisers judge lead quality and optimize toward business opportunity rather than form fills alone.
The number of unique people or households who saw an ad or piece of content at least once during a defined period.
Why it matters to advertisers: Reach shows how broadly a campaign is connecting with the intended audience and helps advertisers balance audience growth with repeated exposure.
Showing ads to people who previously visited a website, used an app, watched content, or otherwise interacted with a brand.
Why it matters to advertisers: Remarketing keeps the business visible to warmer prospects and can bring back people who were interested but not ready to act.
A measure comparing the value or profit generated by an investment with its cost.
Why it matters to advertisers: ROI helps advertisers connect marketing activity to financial impact and make smarter decisions about where to invest.
Improving a website’s content, structure, and authority so it can appear more prominently in unpaid search results.
Why it matters to advertisers: SEO helps advertisers build long-term visibility when potential customers are actively looking for answers, products, or services.
Using paid advertising to appear in search engine results, commonly through keyword-based search ads.
Why it matters to advertisers: SEM lets advertisers reach people who are expressing immediate intent and measure which searches drive valuable actions.
Evidence that other people trust or value a business, such as reviews, testimonials, case studies, and recommendations.
Why it matters to advertisers: Social proof reduces uncertainty and can make advertising claims feel more credible to prospective customers.
The defined group of people most likely to need or value an advertiser’s offer, based on relevant traits, needs, behaviors, or location.
Why it matters to advertisers: A clear target audience reduces wasted exposure and helps advertisers tailor messages that feel useful and specific.
The visits or visitors coming to a website from paid, organic, direct, referral, social, and other sources.
Why it matters to advertisers: Traffic shows whether marketing is bringing people to the website, but advertisers should also evaluate the quality and actions of those visits.
Content created by customers, fans, or users, including reviews, photos, videos, and social posts.
Why it matters to advertisers: UGC can provide authentic social proof and relatable creative that helps advertising feel less like a polished sales message.
The overall experience someone has while using a website, app, or digital product, including clarity, speed, accessibility, and ease of use.
Why it matters to advertisers: Good UX removes barriers between ad interest and conversion, protecting the value of the traffic an advertiser has paid to earn.
Content or campaigns designed to encourage rapid person-to-person sharing.
Why it matters to advertisers: Viral reach can create substantial attention, but advertisers should make sure the content still supports the brand and a meaningful business objective.
Grouping website visitors by characteristics such as source, behavior, location, or stage in the customer journey.
Why it matters to advertisers: Segmentation helps advertisers tailor messages and analyze which types of visitors are most likely to take valuable actions.
A live or recorded online presentation used to educate, demonstrate expertise, or engage an audience.
Why it matters to advertisers: Webinars give advertisers a high-value way to generate leads, build trust, and learn what prospective customers care about.
An in-depth educational report that explains a topic, problem, research finding, or solution.
Why it matters to advertisers: A useful whitepaper can establish credibility and generate qualified leads, especially for complex B2B decisions.
The revenue or return generated from an advertising impression, placement, visitor, or available ad inventory.
Why it matters to advertisers: Yield helps advertisers and publishers evaluate the economic efficiency of media and compare the value produced by different placements or audiences.
