Marketing Tracking Glossary

Comparing two versions of an ad, landing page, or email to see which performs better. Traffic is split between version A and version B, and the winner is determined by statistical significance. Also called split testing.

A performance-based marketing model where affiliates earn commissions for driving traffic or sales to a merchant's products. Affiliates use tracking links to get credit for conversions they generate.

The process of assigning credit to marketing touchpoints that contributed to a conversion. Different attribution models (first-click, last-click, linear, time-decay) distribute credit differently across the customer journey.

A rule or set of rules that determines how credit for conversions is assigned to touchpoints in the customer journey. Choosing the right model is critical for understanding which channels actually drive revenue.

Non-human traffic generated by automated programs (bots). Can be legitimate (search engine crawlers) or malicious (click fraud bots). Bot traffic inflates metrics and wastes ad budget if not filtered out.

The fraudulent clicking of pay-per-click ads to drain a competitor's budget or generate fake revenue for publishers. Can be done manually or by bots. Costs advertisers billions annually. Tools like ClickMagick help detect and block it.

A unique identifier appended to a URL when a user clicks an ad (e.g., gclid for Google, fbclid for Facebook). Used to match clicks to conversions in postback tracking systems.

The process of recording and analyzing every click on a link, ad, or button to understand user behavior, traffic sources, and conversion paths. Essential for measuring campaign performance.

A professional link tracking and optimization platform used by affiliate marketers and performance advertisers. Features include click tracking, split testing, bot filtering, conversion attribution, and funnel analytics. The tool this site is built around.

The payment an affiliate receives for generating a conversion. Can be a flat fee per sale, a percentage of the sale value, or a recurring payment for subscription products.

The percentage of visitors who complete a desired action. Calculated as (Conversions ÷ Visitors) × 100. Even small improvements in conversion rate can dramatically increase revenue without increasing ad spend.

Measuring when a user completes a desired action — a purchase, signup, form fill, or phone call. Conversion tracking connects ad spend to actual revenue, making it the backbone of ROI measurement.

Meta's server-side tracking solution that sends conversion data directly from your server to Meta, bypassing browser-based limitations like ad blockers and iOS privacy restrictions. More reliable than pixel-only tracking.

The average cost to acquire one customer or conversion. Calculated as Total Ad Spend ÷ Total Conversions. The most important metric for direct response advertisers — if CPA is below your profit margin, you're winning.

The amount you pay each time someone clicks your ad. Calculated as Total Ad Spend ÷ Total Clicks. Lower CPC means more traffic for your budget, but quality matters more than quantity.

The cost per 1,000 impressions. Common pricing model for display and social media ads. Useful for brand awareness campaigns where reach matters more than direct clicks.

A prompt that tells users what action to take next — "Buy Now," "Sign Up Free," "Get Started." Strong CTAs are specific, urgent, and benefit-focused. The placement and design of CTAs significantly impact conversion rates.

The percentage of people who click on an ad or link after seeing it. Calculated as (Clicks ÷ Impressions) × 100. A higher CTR generally indicates more compelling ad copy or creative.

Uses machine learning to analyze all touchpoints and assign fractional credit based on their actual contribution to conversions. Available in Google Ads and GA4. Requires sufficient conversion volume to work accurately.

The average revenue generated per click. Calculated as Total Earnings ÷ Total Clicks. Critical for affiliate marketers to determine if a traffic source is profitable. If EPC exceeds CPC, you're profitable.

An attribution model that gives 100% of the conversion credit to the very first touchpoint a customer interacted with. Good for understanding what drives initial awareness but ignores the rest of the journey.

The series of steps a prospect takes from first awareness to final purchase. Typically includes awareness, interest, consideration, and conversion stages. Tracking each stage reveals where prospects drop off.

Google's current analytics platform, replacing Universal Analytics. Uses an event-based data model instead of session-based. Includes cross-device tracking, predictive metrics, and BigQuery integration.

A tag management system that lets you add and update tracking codes on your website without editing code directly. Simplifies the deployment of pixels, conversion tags, and custom scripts.

A single instance of an ad being displayed to a user. Impressions measure reach and visibility. One user can generate multiple impressions by seeing the same ad multiple times.

Any traffic that doesn't come from a real human with genuine interest. Includes bot traffic, accidental clicks, and click fraud. Google and other platforms have systems to detect and filter IVT, but not all of it is caught.

A standalone web page designed for a specific marketing campaign. Visitors "land" here after clicking an ad or link. Effective landing pages have a single clear CTA and are optimized for conversions.

The most common attribution model — gives 100% of conversion credit to the last touchpoint before the conversion. Simple but often misleading, as it ignores all earlier touchpoints that influenced the decision.

An audience created by an ad platform (Facebook, Google) that finds new users who share characteristics with your existing customers or website visitors. Highly effective for scaling campaigns to new prospects.

The total revenue a business can expect from a single customer over the entire relationship. Knowing LTV allows you to spend more to acquire customers than competitors who only look at first-purchase profit.

Facebook's tracking pixel (now called Meta Pixel) that tracks user behavior on your website and sends data back to Meta's ad platform. Used for conversion tracking, retargeting, and lookalike audience creation.

An attribution approach that distributes conversion credit across multiple touchpoints in the customer journey. Models include linear (equal credit), time-decay (more credit to recent touches), and position-based (U-shaped).

An affiliate network acts as an intermediary between merchants and affiliates, providing tracking infrastructure, payment processing, and offer discovery. Examples include ClickBank, Commission Junction, and ShareASale.

In affiliate marketing, an "offer" is a specific product or service being promoted, along with its commission structure, tracking setup, and promotional materials. Affiliates choose offers based on EPC, conversion rate, and niche relevance.

Visitors who arrive at your site through unpaid search engine results. Driven by SEO efforts. Organic traffic is often considered the most valuable long-term traffic source because it doesn't require ongoing ad spend.

Visitors who arrive via paid advertising — Google Ads, Facebook Ads, native ads, display ads, etc. Paid traffic is immediate and scalable but stops when you stop paying.

A tiny 1x1 transparent image or JavaScript snippet placed on a webpage that fires when a user visits, allowing advertisers to track behavior, build retargeting audiences, and measure conversions. Facebook Pixel and Google Tag are common examples.

A server-to-server tracking method where conversion data is sent directly between servers without relying on browser cookies. More reliable than pixel tracking, especially in a cookieless world. Also called a "server postback" or "S2S tracking."

The process of automatically sending a user from one URL to another. In tracking, redirects allow data collection before the user reaches the final destination. 301 redirects are permanent; 302 are temporary.

Showing ads to people who have previously visited your website or interacted with your content. Retargeting audiences are warmer and convert at higher rates than cold traffic. Requires pixel implementation.

Revenue generated for every dollar spent on advertising. Calculated as Revenue ÷ Ad Spend. A ROAS of 3x means you made $3 for every $1 spent. The primary profitability metric for paid advertising.

The overall profitability of an investment, accounting for all costs (not just ad spend). Calculated as (Net Profit ÷ Total Investment) × 100. Unlike ROAS, ROI includes product costs, overhead, and other expenses.

Another term for A/B testing. In link tracking, split testing can route traffic between multiple URLs to test different offers, landing pages, or funnels. ClickMagick has built-in split testing functionality.

A custom parameter added to affiliate tracking links to identify specific traffic sources, ad campaigns, or placements. Allows affiliates to see which specific ads or sources are generating conversions.

A specially formatted URL that routes traffic through a tracking system before sending the visitor to the final destination. Captures data like source, device, location, and time of click.

Where your website visitors come from. Common sources include organic search, paid search, social media, email, direct, and referral. Understanding traffic sources helps allocate budget to the highest-performing channels.

Tags added to URLs (utm_source, utm_medium, utm_campaign, utm_term, utm_content) that tell analytics platforms where traffic came from. Used to track the effectiveness of marketing campaigns in Google Analytics and other tools.

Gives conversion credit to an ad that was seen (but not clicked) before a conversion occurred. Common in display and video advertising. Often controversial because it can inflate the perceived value of impression-based campaigns.