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SEO, SEM, Affiliate, Email Marketing [500+ Complete Terms]

SEO, SEM, Affiliate, Email Marketing [500+ Complete List of Terms]

The exhaustive definition of terms in SEO, SEM, Affiliate Marketing, Email Marketing, etc in no particular order.

Contents show

This is a digital marketing method where you optimize your website for a specific keyword (that you will want to rank for) and boost its reach by paying to show your website on the top pages of a Search Engine Result Page (SERP).

Affiliate Marketing

The process of selling another person’s (or company’s) product for a percentage of the sale. Say, for a product of $20, you have an agreement with the product owner that for every 1 sale, you get an instant 30%, so when you sell 5pieces, you make $6 x 5 = $30.

SEO (Search Engine Optimization)

A special practice of optimizing a website to improve its presence (visibility, position) on search engines, mostly to boost organic website traffic.


An act of making your website become and perform in the best state.

Organic Traffic

Any website visitors that are not from paid search ads, that found and got to your website from a search engine.

Website Traffic

Mobile or desktop users who visit your website.

SEM (Search Engine Marketing)

An act of using paid search ads to drive more website visitors from search engines.

Digital Marketing

This refers to any marketing that is carried out online. It’s like an umbrella that shelters all the other smaller marketing techniques that take place online.

Advertising that’s done on a search engine, that is paid based on either impressions, clicks, or sales generated.

PPC (Pay Per Click)

A way of promotion where advertisers are charged for every time their ads are clicked.

Cost Per Action (CPA)

A pre-determined charge paid to a marketer for actions taken by a customer, like making a purchase.

CPC (Cost Per Click)

Billing advertiser(s) based on number of ads clicks. 

Social Media Marketing (SMM)

Promoting a brand via one or more social media platforms.

Online Marketing

Any marketing that is done online (digital marketing).

White Labeling

The act of licensing the full legal right to rebrand and sell a product made by one company to another company (on purchase).


The act of buying a finished product or a bigger quantity of another company’s services, and then reselling it to others. For instance, Webhosting reselling.

The link that points from a webpage to the webpage of another external website. A link that references another website. 

Another name for backlinks. These are links from other sites to your site, or, from your site to another site (s).


The term used for referring to the visitors that come to a website.


The act of carrying out an inner analysis of how good or bad a website, service, or app is performing based on some metrics, like SEO.


An act of promoting and selling a service or product; advertisement.

Social Media

The collective name for all the micro-blogging websites and mobile applications that have made it easier to create and share content and with a wider reach. E.g: Facebook, Twitter, Snapchat, etc.


The act of writing about a niche or an industry to make money, or for another course.

Social Media Marketing Traffic

The website visitors you get to your website or blog from social media.


The contact of an individual who is most likely to buy your product or service recommendation.

Lead Generation

The process of getting many contacts of potential customers. People who have an interest in the product you sell or are an affiliate of, and are likely to buy from you.


A marketing strategy that tries to get people genuinely interested in a product and hence cause them to begin interacting either with you or themselves. 


The set of people that could have an interest in your product or service. Say, gamers will have interest in PS5, Bloggers will have interest in AdSense.

The act of increasing the awareness of a product, service, or brand by paying to get it in front of a public or really large audience than you could without paying, to make more sales. 


Publicizing a product, service, or brand to increase awareness and sales. Most times, by paying advertisers.

Search Engine

The combination of smart algorithm bots and a massively large database of almost all the websites in the world, to help searchers find the best solution to their queries fast!


A reach out seeking to generate leads, boost revenue, and brand awareness.


An audio recording that is made available on the internet for public consumption.

Landing Page

A webpage made mostly to transform new visitors into leads by providing a form filed for visitor’s contact details (and sometimes a freebee to download to boost conversion rate).

Email Marketing

A form of high converting digital marketing model done through an email list of prospects and old customers.


A piece of write-up about a given topic. 

Blog posts

A piece of write-up about a given topic or niche, published on a blog.


Any material that conveys valuable and relevant information, either in the form of images, infographics, videos, or something else.

SERPs (Search Result Pages)

The pages that returns the results of a search query.

Marketing Tools

The strategies, software, services, or resources used to make marketing more effective.

Marketing Strategy

A plan and pattern of promoting a product or service that has proven to work well in a product or niche.


The position of a website on search engines, after a deep analysis.


The sudden popularity of a topic or event over a while (usually a short period).


A detailed examination and breakdown of the performance of a website over a specified period.

DR (Domain Rating)

This is a websites domain metric, developed by Ahrefs to measure the strength of a domain based on the total number of backlinks to it, on a scale of 1 to 100.

DA (Domain Authority)

Developed by Moz, this is a scoring mechanism of 1 to 100 of a website strength to rank higher than competitors on search engines, based on the quality and quantity of its backlinks.

These are the links that Google has found and added to their database and are ready to show up on search pages.


Keyword in digital marketing means the important phrases and terms in content to rank for.

Keyword research

This is the search for the best phrases and terms (keywords) that people are looking for and is also easy to rank for on search engines.

Trust Flow (FL)

A measure of the soundness of your overall website quality, content quality, and spam score. The quality of website visitors and where those visitors found your site can also boost or harm the trust flow of a website.

CTR (Click Through Rate)

This is a measure in percentage (%) of the number of people that saw your ads, product listing, or website versus the number of people that clicked on it.

Alexa Rank in

Relative estimation of a website position on a national or global reach based on the number of visitors to a website over a period of time, by Alexa.

Searching, and, the search results returned strictly on search engine algorithm without any promotions or boost of the displayed results. Purely organic.

Display Advertising

Promotions that appear solely online and on electronic devices, no prints.

Authority Score

The calculation of the overall score of a website everything being equal, but also mostly based on backlinks count.


The people in the same space/niche with you, and do the same thing you do.


These are the two types of backlinks indicate to search engines that they are allowed to use the link for page ranking calculations thereby adding link juice and authority to a website. On the other hand, no-follow backlinks are the opposite of DoFollow backlinks.

Anchor text

A text on a web page with a clickable link.

Referring Domains

These are the external websites or linking domains that point visitors from another website to your website.


A shortened form used to mean advertisement. 

Google AdSense

A marketing model that allows publishers and bloggers or website owners to earn money by displaying ads in-content or overlay ads.

Unique Visitors

Refers to the number of separate individual visitors to a website. So this has to do with visits, not page views. One person can view a page 10 times, but the unique visitors count metric is concerned with how many distinct individuals visited a website or blog.

Returning Visitors

Visitors from people who have come back for the second or more time. In other words, they’ve been to your website before this time.

Retargeted Ads

This is a type of advertising that aims for visitors or prospects who have at a point showed interest, but for any reason did not complete an action on a website or sales page.

Page RPM (Page Revenue Per Mille)

Sometimes called revenue per thousand impressions is an advertisement cost calculation metric for billing advertisers per thousand page views or impressions.

Ads Impression (IMPR)

The count of the times an ads display (on load time) on a publisher’s website.


The buying and selling of digital or physical products electronically over the internet.


Restriction of access to an IP address that is believed to not be trusted or share spam.


Digital marketing tactics and practices that are believed to be in line with the legal best practices. E.g: Whitehat SEO.

Greyhat SEO

An SEO practice that is not really frowned upon, but not recommended practice. You’re better off with a whitehat practice.


The automatic discovery of a new or updated website/page or blog by search engine bots and then indexing them to the search engine’s database for ranking.

The short description or definition of a term (from one of several of Google’s valued websites) that tops the first page of every Google search.

Social media posts that are boosted by paid promotion. 

In blogging, these are the blog posts published on another website with a large number of visitors from a target reader audience.

Search Intent

The reason for a search query; what the searcher could have in mind.

Search Query

These are the words or phrases (keywords) that a user searches on a search engine. 


Storing some website data locally in a device’s memory for a faster load time to a website on revisit. The practice of serving a pre-generated version of your page when requested, rather than having the server process and generate the page on demand.

Internal Linking

A link from one page of a website to another page of the same website.


A lightweight text file that tells a search engine crawler which URL can be accesses and ones not to.


The map of a website supplied to search engines, that contains the direction to all parts of a website.

Keyword Competition (SEO Difficulty)

A score that visualizes how difficult it is to rank on a search engine for a particular keyword.

Long-tail keyword

A phrase that is typically longer than usual (5 – 7 words+), utilized to narrow down to as close to specific user’s search queries as possible.

Search Volume

The number of estimated organic searches for a keyword in a specified duration.

Alt Text

Alternative text for images. Displayed on mouse over or when an image fails to load.

Duplicate Content

Content that appears (in part or full) on a different website.

Image Compression 

Optimizing an image by reducing the size for SEO benefits or faster website load speed.

Keyword Stuffing

Excessive use of a keyword(s) trying to manipulate a website’s rank on search engines.

Meta Description

A short (sometimes max 60 characters) description of a blog post, including the keyword, an intro, or summary of the whole post.


Sending a visitor to a different page of the same or external website.

SSL Certificate

Secure Sockets Layer certificate is a digital certificate that provides an encrypted connection for secure communication on a website. 


A concise summary or image representation (or both) of a blog post.

Title Tags

The title or headline of a webpage or blog post.

Rich Snippet

A search result that stands out by displaying additional information such as reviews.

Guest Blogging

The process of writing blog posts for another website but in the same niche, to drive more traffic and improve website quality through dofollow backlinks.

Informed move to increase a website’s number of backlinks.

Email List Building

Process of gathering email addresses of interested website visitors, for creating quality content, or exchange for a goodie.

Exchanging backlinks with other websites in the same niche.

Page Authority (PA)

A metric developed by Moz that scores how high or low a particular page of a website can rank on a search engine result page.

Referred Traffic

Website visitors from one or more of your backlinks.

A list of recommended next read based on the currently finished blog post.

Resource Page

An archive on a blog or collection of relevant content on specific topics on a website.

Spam Score 

A score of how trustworthy a website is. The higher the spam score, the lower the TF trust flow.

Bounce Rate

Percentage representation of the number of visitors that click away after visiting only one page of a website.

Sales Funnel

A well-planned customers journey step by step from visitor to a paying customer.


The sudden appearing small boxes from the top of a website (used for growing an email list), that often ask for visitors’ email in exchange for something valuable.


When a visitor completes a specific action on a website.

Conversion Rate

Percentage of visitors that converted.

Duration Per Session

Metric to calculate how much time visitors spend on a site per visit, before leaving.

A link to a website that no longer exists at that location.


A review or opinion visitors drop after reading a blog post.

Links that belong to another website other than the one they display on.

A search engine provided by Google for faster discovery of information and sites they live in.

Shared Hosting

Web hosting service where a single server powers multiple websites.

Dedicated Hosting

Web hosting service that gives a single dedicated physical server to a client, not share with any other persons.

Cloud Hosting

Powering websites and applications over the cloud on multiple servers for speed and efficiency.

Keyword Density 

Number of times a key phrase appears on a given blog post or webpage.

Meta Keyword 

meta tag of the semantic keywords of a website in the HTML page of the website.

Meta Tags 

Snippets of text in a website’s HTML source code that describe the main keywords of a website.


A specific section of a big industry that blogs base on.

On-page SEO 

The optimization of the inner pages and posts of a website to boost its organic search ranking. Such as optimizing images and content.

Off-page SEO 

Off-site SEO optimization practices to boost ranking. Such as increasing backlinks.

A link from your website to another external website.

Page Speed 

How fast a webpage loads despite the size and datacenters’ locations.

Private Blog Network (PBN)

A network of several unrelated blog sites that point to one domain or website to boost its search engine ranking.

Quality Content 

Piece of write-up or other content types that humans and search engines could find valuable.

Ranking Factor 

Determinants (directly or indirectly) of the possibility of a website ranking high or low on search engines. This includes any metric that search engines may evaluate for ranking.


Structured microdata that adds Google Rich Snippets markup to a webpage according to guidelines to structure your site for SEO.

Search History

A record of everything you search for on Google that is stored in your cookies or Google Account (for logged-in users).

Social Signal 

Outlook of a website’s social media shares counts, votes, comments, and overall engagement.

Split Testing (A/B Testing)

Comparing several versions of a webpage (landing pages, sales page, etc) to identify the one with a higher conversion rate.

Top-Level Domain (TLD)

 The highest placed set of domains in the hierarchy of the Domain Name System (DN) of the internet.


A public (or private) platform where users share ideas and their views on any given topic. E.g: Quora 

User-generated Content

Content that is created and shared by users (like in forums) rather than a single author (like in blogs).

User Experience (UX)

The overall feel and experience a user has after using a product or service.


One page of a website.


One or more related web-hosted pages owned and maintained by an individual, group of people, or company.


Browsing from one page of a website to the next by visitors with ease.

Word Count

The number of words a page or content is made up of, including or excluding prepositions.


An identified select group of audience to deliver ads to.


Delivering different versions of content, one to the user, and the other to search engines for the purpose of ranking. Note that this is considered bad practice.

Customer Journey Map (Sales Funnel)

The entire decision-making phase of making a customer off an ordinary web visitor that only had an interest in a product or service. 


Collection of a list of websites’ data/content or products with reference to their source. 

Geo-specific search mostly to find product or company listings within a locality.

Local SEO

Search engine optimization technique that allows a business to rank higher in local search results.

Shopify Store

An already-made e-commerce platform that allows anyone to set up, grow and make money from their own eCommerce website, without manufacturing their own product.

Amazon Marketing/Advertising

Marketing steps, taken to improve the number of sales of a personal or affiliate product listed on the Amazon marketplace.

Amazon FBA

Fulfillment by Amazon allows you to send your products to Amazon’s fulfillment centers to pick, pack and ship them for you, provide customer service and support, and everything else.

Amazon SEO

Optimizing product descriptions and title tags to improve their visibility on search engine result pages.


An affiliate marketing network of digital products, affiliate marketers, and product vendors.

Internet searches from a mobile or handheld device.

Mobile Visitor

Website visits from an application on a mobile or handheld phone such as a smartphone or watch.

RSS Feed

Really Simple Syndication is a popular web feed format that provides webpage content and updates once original content is edited in real-time.

KPI (Key Performance Indicator)

Measure of the performance of a business compared to her business success goals and objectives.

ROI (Return on Investment)

A net return of an investment after evaluating the invested capital versus the returns of the investment.

Content Marketing

Creating and sharing content of any form of content, such as blog posts, infographics, videos, etc, to create awareness for a brand and get exposure.


Visual representation of data in the form of charts, diagrams, tables, and other visuals that enhance post-absorption and engagement.

Content aim at generating backlinks.

Specific search for video content on internal or external sources (Google, Youtube).

Affiliate Program

A setup by a product owner that allows affiliate marketers to promote such products for commission in the percentage of the sale price.

Call to Action

A marketing recommendation to a prospect to take some actions by either filling a form or complete a purchase.

Backlinks that are placed within a blog post or among other texts on a webpage.

Contextual Ads

An advertisement on a website that tends to blend into the feel and branding of the website and is related to the discussed topic on the content it appears.

CPA (Cost Per Acquisition)

The measure of the cost of acquiring one paying customer on a campaign.

Facebook Ads

Social media marketing run facebook that targets users based on their location and profile information.

Pay Per Call (PPC)

Performance-based marketing model where an advertiser pays a publisher for the number of calls it got from the publisher’s platform.

Quality Score

Google’s rating of the relevance and quality of a keyword for calculating Cost Per Click (CPC) and ad rank.

Relevance Score

A score on a scale of 1 – 10 of the quality and state of your ads compared to other ads targeting the same audience.


Targeting individuals that have seen your ad in the past and interacted with it, but dit complete an action, once again.

User Feedback

Data from users about their experience with a product such as disliked features, suggestions for feature inclusions or removals, etc.

Viral Marketing

Marketing model that tries to make an event, product, service, or brand trend on different platforms by a combination of different marketing techniques.

Open Rate

The measure of the rate at which an email was opened compared to how many subscribers it was sent to, in percentage. 

Cost Per Lead

How much ad spend it costs to get a subscriber.

Cost Per Order

How much money was spent to get a completed product order.

Conversion Chart

Representation of the rate of conversion over a period of time, in a chart or tabular form.

Earnings Per Click

The amount of money earned by a publisher compared to the volume of clicks ads on their platform generated.

Lead Rate

Percentage of converted visitors out of the total number of website visitors over a period of time.

A unique link that enables affiliates to refer buyers that could be tracked.


Website owner or blogger that allows advertisements to be placed on their website to get paid for the exposure.


A compensation (in the percentage of a product sale price) is earned by affiliate marketers for every sale they make.


A short descriptive public awareness note, mostly on websites that promote affiliate products.


Any tangible or digital piece of monetary value that is meant to be sold.


Promise or agreement a product owner makes with an affiliate for his performance.


Additional products (addons) that customers are persuaded to buy.


An online tool for building high-converting sales pages.

Referral Codes

Custom names or numbers that affiliate marketers utilize to advertise with word of mouth marketing.

Referral Bonus

An incentive to motivate already-made customers to invite their friends for some monetary rewards.

Niche Blogging

Writing and posting blog posts about a specific section of a bigger industry.

Niche Marketing

Promoting and selling a product or service to a niche/segment of a larger market.


The total income earned from sales of a product or service.

Net Profit

An amount of money that remains after accounting for all expenses that went in to make the sales.

Unique Clicks

The total number of first-time clicks on a campaign or link.


The count of real human visits to a pitch/sales page.


Exchange of product or service for money.

Postback URL

A link that reports whenever a conversion or sale takes place from an affiliate link, before automatically releasing earnings to the affiliate.

LSI (Latent Semantic Indexing) 

Keywords that are conceptually related to another that search engines use to analyze and understand the main topic of a blog post. 

GEO Targeting

Targeting users in a specific location.

301 Redirect

An HTTP status code for permanently redirected pages of a website.

404 Error Page

HTTP error status code display for non-existent of moved web pages.

500 Error Page

HTTP error code indicating a server error.

Affiliate Agreement

Documented agreement between two parties (the product owner and affiliate marketer) to form a mutual business partnership of, ‘sale my product and get a pre-agreed percentage for every of your sales’.

These are advertisements that have an image, some text, and advertisement links.


Locally saved automatically generated web text files containing important pieces of information about a user such as a username, password, history of interactions, and behavior on the internet over a long or short period of time.

How long some cookies could live before being erased or updated.


Sales made before a product is launched.


Resources that identify a company or entity, shaped over time.

Video Marketing

Utilizing video ads to marketing a product or service.

Affiliate Manager

The person in charge of managing an online affiliate program for each affiliate marketing merchant.


Estimated number of people from a specific or global audience an ad can reach for the running period.


An email marketing campaign that follows based on subscribers’ interaction with a previous campaign or product.


A computer program that automates welcome emails, replies, and follow-ups.

…. if you have more that were not covered here, do well to drop them in the comment box below.