Digital Marketing Glossary

The language of social media, digital marketing and AI, in plain English, without the hype.

This glossary explains the terms that come up when you build a presence online, from hashtags and content pillars to ad metrics, data protection and AI. Each entry starts with a short definition, then shows how the term works in practice and what to watch out for.

I wrote it for the people I work with, from founders and corporate teams to public figures, who want to understand the language of digital marketing well enough to make their own decisions. On the terms closest to my work, you will also find my take.

Search for a term, browse by topic or go through the full list from A to Z. Platforms and tools change quickly, so every entry shows when it was last updated.

All terms, A to Z

A/B testing compares two versions of an ad, email or page by showing each to a similar group of people and measuring which performs better. Changing one element at a

Split Testing, A/B Test, Split Test

Account-based marketing (ABM) is a B2B approach that treats a few high-value companies as markets of one, with campaigns tailored to each account. Marketing and sales choose the accounts together,

ABM, Key Account Marketing

Ad

An ad, short for advertisement, is a paid message that promotes a product, service, idea or cause to a chosen audience. Online, ads appear in social feeds, search results, videos,

Advert, Advertisement

The agentic era is the phase of AI in which systems take actions as well as answering questions, planning steps and using tools with limited human direction. Tech companies began

Age of AI Agents, Agentic AI

An aggregator account is a social media account that mainly reposts content made by other people on one theme, such as memes, news or sport. Good ones curate carefully and

Aggregator Page, Repost Account, Curation Account

An AI classifier is a machine learning model that sorts inputs into set categories, such as spam or not spam, or positive or negative. It learns from labelled examples, then

Classifier, Classification Model

The AI development lifecycle is the series of stages from defining the problem and gathering data to training, testing and deploying a model. It is a loop rather than a

AI Lifecycle, Machine Learning Lifecycle, AI Project Lifecycle

An AI model is a system trained on data to recognise patterns and use them to make predictions, decisions or new content. It is what sits inside an AI tool:

AI Model, Machine Learning Model, Foundation Models

The AIDA model describes four stages a person moves through before acting on a message: Attention, Interest, Desire and Action. Marketers use it to structure ads, landing pages, emails and

AIDA, AIDA Framework, AIDA Formula

On social media, the algorithm is the set of ranking systems a platform uses to decide which posts each person sees, and in what order. It predicts what someone is

Social Media Algorithm, Feed Algorithm, Recommendation Algorithm

AlphaGo is an AI system built by DeepMind that beat Lee Sedol, one of the strongest Go players in the world, four games to one in 2016. Go has more

AlphaGo Zero

Andrew Ng is a British-American computer scientist who co-founded Google Brain and the online learning platform Coursera. He is one of the best-known educators in AI, and his courses have

Andrew Yan-Tak Ng

Answer engine optimisation (AEO) is shaping content so search engines and voice assistants can lift it as a direct answer to a question. It favours clear questions, concise answers and

AEO, Answer Engine Optimization

An Ask Me Anything (AMA) is a question-and-answer session in which a person or brand invites an online audience to put any question to them. The format started on Reddit

AMA

A backloop is a feedback loop in marketing: a regular routine that feeds what past campaigns and content revealed back into the planning of the next ones. The idea is

Feedback Loop, Marketing Feedback Loop

A bill of materials (BOM) is the complete list of parts, materials and quantities needed to make a product, from the finished item down to single components. It is the

BOM, Parts List, Product Structure

A bottleneck is the single step in a process that limits how fast the whole process can move, like the narrow neck of a bottle. In marketing, it might be

Constraint, Process Bottleneck

Brain rot is a non-clinical, often tongue-in-cheek term for the mental fog that comes from too much low-quality online content, especially short-form video. It also describes that kind of content

Brainrot

Brand awareness is how familiar people in a target audience are with a brand, from recognising its name or logo to thinking of it first when a need arises. It

Brand Recognition, Brand Recall

Brand sentiment is the overall feeling people express about a brand, whether positive, negative or neutral, in what they post, comment and review. It adds the why to awareness: a

Brand voice is the consistent personality a brand or person expresses in words, shaped by what they say, how they say it and what they would never say. It stays

Tone of Voice, Verbal Identity

Broetry is a LinkedIn writing style that breaks a post into short, single-sentence lines to turn a personal story into a dramatic business lesson. The name blends bro and poetry,

Bro Poetry

A burner account is a secondary, usually anonymous online profile that lets someone browse, post or comment without revealing who they are. People create them for privacy or to keep

Throwaway Account, Alt Account, Burner

A buyer persona is a profile of a typical customer, built from research, that describes their situation, goals, problems and how they make decisions. It helps a team write and

Customer Persona, Marketing Persona, Audience Persona

A byline is the line that names the author of an article, post or report, usually placed under the headline. Beyond giving credit, it tells readers who stands behind the

Author Byline, Author Credit

A call to action (CTA) is the prompt that tells people what to do next, such as a button to book a call, a link to a guide or a

CTA, Call-to-Action

A centralising strategy puts marketing decisions, budgets and brand control in the hands of one central team, instead of each market running its own. It trades some local flexibility for

Centralised Marketing

Change My View (CMV) is a discussion format in which someone states an opinion and invites others to change their mind with better arguments. It comes from Reddit’s r/changemyview community,

CMV

Click-through rate (CTR) is the percentage of people who click a link, ad or search result after seeing it, calculated as clicks divided by impressions. It shows how well a

CTR, Clickthrough Rate

Community management is the day-to-day work of building and looking after the relationship between a brand and its audience, in comments, messages and groups. It covers starting conversations, answering questions

Online Community Management, Community Manager

A content engineer designs the systems behind content rather than individual pieces, so a team can produce consistent, personalised content at scale. The work covers structures, templates, workflows and AI

Content intelligence is the use of data, analytics and often AI to understand how content performs and why, so teams can decide what to make next. It goes beyond reporting

Content Analytics

A content pillar is one of a small set of core themes that an account or brand returns to again and again, so its content stays focused and recognisable. A

Content Pillars, Content Bucket, Content Theme

Context engineering is deciding what information an AI model receives for a task, and in what form, so it can do the job well. It covers the instructions, examples, documents,

Context Design

A context window is the amount of text, measured in tokens, that an AI model can take into account at once. It includes the conversation, instructions and any documents, and

Context Length, Token Limit

Contextual understanding is an AI system’s ability to interpret words through their surroundings rather than in isolation. Using the rest of the sentence, the conversation or the user’s situation, it

Context Awareness, Semantic Understanding

Conversion rate is the percentage of people who take a desired action, such as buying, signing up or booking a call, out of everyone who had the chance to. If

CVR, Conversion Ratio

Cost per acquisition (CPA) is the average cost of winning one customer or conversion, calculated as total spend divided by the number of acquisitions. It shows whether advertising or marketing

CPA, Cost per Action, Cost per Result, Cost per Conversion

Cost per mille (CPM) is the price an advertiser pays for 1,000 impressions of an ad, mille being Latin for thousand. It is the standard way to compare what reach

CPM, Cost per Thousand, Cost per Thousand Impressions

A creative bottleneck is a point where the production of ads, videos, designs or copy slows or stops because ideas, people or approvals cannot keep up. It is one of

Creative Production Bottleneck

The customer journey is the full path a person takes with a brand, from first hearing of it to buying, using the product and, ideally, recommending it. Mapping it shows

Buyer Journey, Customer Journey Map, Customer Lifecycle

Data cleaning is finding and fixing errors in a dataset, such as duplicates, typos, outdated records and inconsistent formats, so the data can be trusted. In marketing, it keeps contact

Data Cleansing, Data Scrubbing, Data Hygiene

Deep learning is a type of machine learning that uses artificial neural networks with many layers to learn from large amounts of data. It drives most of the recent progress

Deep Neural Networks, Deep Neural Learning

Direct response advertising asks people to act right away, by buying, signing up, calling or downloading, and measures success by how many do. It differs from brand advertising, which builds

Direct Response Marketing, DR Advertising

A downstream content strategy focuses on people who are already close to a decision, with content that helps them choose and act. Comparisons, case studies, demos, pricing pages and FAQs

Downstream Content, Bottom-of-Funnel Content, BOFU Content

An echo chamber is an online space where people mostly meet views that match their own, so their beliefs are repeated back to them and rarely challenged. Feeds that recommend

Online Echo Chamber, Echo Chamber Effect

An editorial system is the software a newsroom, publisher or content team uses to plan, write, edit, approve and publish content. It overlaps with a content management system, which focuses

Editorial Management System, EMS, Editorial Workflow System

Employee advocacy is the promotion of a company by its own employees on their personal social media profiles, sharing its news and their own expertise. Done well, it reaches people

Employee Ambassadors, Employee Brand Advocacy

End-to-end content is an approach in which one team or plan covers every stage of content, from research and creation to distribution and measurement. The aim is that nothing gets

End-to-End Content Strategy

Engagement rate measures how many people interact with a post or account, through likes, comments, shares, saves or clicks, as a percentage of its audience. That audience can be reach,

Engagement, ER

The enigma code is a storytelling technique that holds attention by raising a question and delaying the answer, so people keep reading or watching. The French theorist Roland Barthes first

Hermeneutic Code, Enigma Codes

Enshittification is the gradual decline of an online platform as its owners shift value away from users, then from business customers, to boost their profits. The writer Cory Doctorow coined

Platform Decay, Crapification

The For You Page (FYP) is TikTok’s main feed, where an algorithm picks videos for each user based on what they watch, like, share and skip. Landing there is how

FYP, For You Feed

GDPR, the General Data Protection Regulation, is the European Union law that governs how organisations collect, use and protect people’s personal data. It has applied since May 2018, including to

General Data Protection Regulation, AVG, RGPD

General AI, or artificial general intelligence (AGI), is a hypothetical AI that could learn and perform any intellectual task a person can. It would carry knowledge from one field to

AGI, Artificial General Intelligence, Strong AI, Human-Level AI

Generative AI is artificial intelligence that creates new content, such as text, images, audio, video or code, in response to a prompt. It learns patterns from huge amounts of existing

GenAI, Gen AI, Generative Artificial Intelligence

Generative engine optimisation (GEO) is making content more likely to be used and cited by AI assistants such as ChatGPT, Gemini and Claude. Instead of competing for a ranking in

GEO, Generative Engine Optimization, AI Search Optimisation, LLM Optimisation

Generic describes anything that could have come from anyone: content with no point of view, an unbranded product or a keyword naming a category, not a brand. In marketing it

Generic Content, Generic Keywords, Non-Branded Keywords

Go-to-market (GTM) is the plan for bringing a product or service to a specific market: who it is for, what it solves and how it will be priced and sold.

GTM, Go-to-Market Strategy, GTM Strategy, Go-to-Market Plan

Google DeepMind is the AI research lab of Alphabet, Google’s parent company, and the team behind AlphaGo, AlphaFold and the Gemini models. It was formed in 2023 by merging DeepMind,

DeepMind, DeepMind Technologies

Grounding is linking an AI model’s answers to specific, reliable sources, such as documents or search results, rather than only what it learned in training. A grounded answer can be

AI Grounding, Grounded Generation

An AI hallucination is an answer that sounds confident and plausible but is wrong or made up, such as an invented statistic, quote, source or event. It happens because language

AI Hallucination, Confabulation, AI Fabrication

A hashtag is a word or phrase after the # symbol that labels a post by topic, so people can find it alongside other posts on the same subject. Platforms

Hash Tag

A human-centric user interface (UI) is designed around how people actually think, see and behave, not around the technology or the organisation behind it. It aims for screens that feel

Human-Centred UI, Human-Centred Design, User-Centred Design

If You Know, You Know (IYKYK) is internet slang that flags a reference only people with the right background or shared experience will understand. Added to a post or caption,

IYKYK

Influencer marketing is a brand partnering with social media creators who have a trusted following, to reach that audience through their content. It works through borrowed trust: followers listen because

Creator Marketing, Influencer Partnerships, Creator Partnerships

Interactive voice response (IVR) is the automated phone system that answers a call, offers options and routes the caller by keypad or spoken answers. It lets callers handle simple requests

IVR, Phone Menu System, Conversational IVR

The Internet of Things (IoT) is the network of everyday objects, such as thermostats, watches, cars and machines, that exchange data over the internet. Sensors and software let these devices

IoT, Connected Devices, Smart Devices

A key performance indicator (KPI) is a measurable value chosen to show whether a business, team or campaign is making progress towards a specific goal. Good KPIs are few, tied

KPI, KPIs, Key Metrics

A landing page is a standalone web page built for one goal, such as signing up, booking a call or buying, often reached from an ad, email or post. It

Lead Capture Page, Squeeze Page, Campaign Page

A large language model (LLM) is an AI model trained on vast amounts of text to predict the next word in a sequence. That one skill lets it write, summarise,

LLM, Language Model, Foundation Model

A lead magnet is something useful a brand offers for free in exchange for contact details, usually an email address. Typical examples are a checklist, guide, template, mini-course, quiz or

Opt-In Offer, Freebie, Content Upgrade, Gated Content

Link in bio is a call to action that sends followers to the clickable link on a profile, because links in Instagram and TikTok captions cannot be clicked. That link

Bio Link, Link-in-Bio

Machine learning (ML) is the branch of AI in which computers learn from data instead of following rules written by hand. Shown enough examples, a model finds the patterns itself

ML

Manual algorithm refinement is the human adjustment of an algorithm’s rules, weights or outputs, as opposed to changes the system learns on its own. On social media, the term also

Algorithm Tuning, Feed Training

The marketing content lifecycle is the series of stages a piece of content passes through, from planning and creation to publication and measurement. It ends with an update or retirement,

Content Lifecycle, Content Marketing Lifecycle

Marketing engineering is the use of data, models and software to support marketing decisions and run marketing processes, instead of relying on intuition alone. Today the term also covers building

Marketing Science, Growth Engineering

A marketing funnel is a model of the stages people pass through on the way to becoming customers, from first noticing a brand to buying from it. It is drawn

Sales Funnel, Conversion Funnel, Purchase Funnel

MarTech, short for marketing technology, is the software marketers use to plan, run, automate and measure their work. It ranges from email platforms and CRMs to social media schedulers, analytics

Martech, Marketing Technology, Marketing Tech

Meta Andromeda is the AI system Meta uses to pick, from tens of millions of ads, the small set that could be shown to each person before final ranking. Announced

Andromeda, Andromeda Update

The Meta Pixel is a piece of code placed on a website to track what visitors do there, such as viewing a page, adding to their basket or buying. It

Facebook Pixel, Meta Pixel Code

A mini-drama is a scripted series made for phones, filmed vertically, with episodes of one to three minutes that usually end on a cliffhanger. The format started in China and

Micro-Drama, Short Drama, Vertical Drama, Duanju

A minimum viable product (MVP) is the simplest version of a product that can be released to real users to test whether it solves a problem they care about. Its

MVP

The Model Context Protocol (MCP) is an open standard for connecting AI applications to tools and data, such as files, calendars and business software. Instead of a custom integration for

MCP

A multi-agent system is a setup in which several AI agents, each with its own role and tools, work together on a task too complex for one. One agent might

MAS, Multi-Agent AI, Agent Teams

A multi-channel campaign delivers one marketing message across several channels at once, so people meet it wherever they spend their time. Social media, email, search, events and print each reinforce

Multichannel Campaign, Multi-Channel Marketing

Multimodality is the combination of several modes of communication, such as text, images, sound and video, in one message or experience. In AI, it describes models that can understand and

Multimodal, Multimodal Content, Multimodal AI

Narrow AI is artificial intelligence built for one task or a limited range of tasks, such as recommending videos, recognising faces or translating text. It can match or beat people

Weak AI, Artificial Narrow Intelligence, ANI

Natural language generation (NLG) is the part of natural language processing that produces human-like text or speech from data or instructions. It writes the sentences in a chatbot reply, an

NLG, Text Generation

Natural language processing (NLP) is the field of AI that helps computers understand, interpret and produce human language, written or spoken. It powers search engines, voice assistants, translation tools, spam

NLP, Language AI

Off brand describes anything that clashes with what a brand stands for, how it sounds or how it looks, such as a post in the wrong tone. Outside marketing, off-brand

Off-Brand

On brand describes anything, from a post to a product decision, that fits what a brand stands for, how it sounds and how it looks. It is the everyday test

On-Brand

Over-the-top (OTT) describes media delivered straight to viewers over the internet, bypassing traditional cable, satellite and broadcast providers. Netflix, Disney+, YouTube and podcast apps are all OTT services, watched on

OTT, OTT Media, Streaming Media, OTT Advertising

Performance data covers the numbers that show how well marketing is working, from reach and engagement to conversions, cost per result and revenue. It turns opinions about a campaign into

Marketing Performance Data, Campaign Data

Personal branding is the deliberate work of shaping how a person is known, by being clear and consistent about what they know and what they stand for. A strong personal

Personal Brand, Self-Branding

A personalised nurture campaign is a series of messages, usually by email, that guides a lead towards a buying decision at their own pace. What each person receives adapts to

Lead Nurturing, Nurture Campaign, Nurture Sequence, Drip Campaign

Phygital describes experiences that blend physical and digital elements, so a customer can move between the two without starting over. Typical examples are a QR code that opens a product’s

Phygital Marketing, Phygital Experience

Product information management (PIM) is the software and process for keeping all product data, such as descriptions, prices and images, in one place. From there it feeds every channel, so

PIM, PIM System, PIM Software

A product requirements document (PRD) describes what a product or feature should do, for whom and why, so everyone involved builds the same thing. It sets out the problem, the

PRD, Product Spec, Product Specification

A prompt is the instruction or question a person gives an AI tool to get a response, from a one-line question to a detailed brief with examples and context. The

AI Prompt, Prompt Input

Prompt engineering is designing, testing and refining the instructions given to AI models so they produce reliable, useful results. It matters most when a prompt is reused, inside a product,

Prompt Design, Prompt Crafting

A prompt library is a collection of tested, reusable prompts kept for recurring tasks, such as writing captions, summarising reports or drafting replies. It saves time and keeps AI-assisted work

Prompt Library, Prompt Collection, Prompt Templates

Prompt literacy is the everyday ability to work with AI tools well: asking clearly, giving context, judging the answers and knowing when not to trust them. Where prompt engineering is

AI Literacy, Prompting Skills

Quora is a question-and-answer platform where anyone can ask a question on any topic and upvotes lift the most useful answers to the top. For experts and brands, it is

Reach is the number of unique people who saw a piece of content or an ad at least once. It differs from impressions, which count every view, so one person

Accounts Reached, Unique Reach

Reasons to believe (RTBs) are the facts and proof points that make a brand’s promise credible, such as a method, a guarantee or a customer result. If the promise says

RTB, RTBs, Reason to Believe, Brand RTBs

Reddit is a social platform built around topic-based communities called subreddits, where members share posts, discuss them and vote on what rises to the top. Its users, known as Redditors,

Redditor, Redditors

Retargeting is showing ads to people who have already interacted with a brand, such as visiting its website, watching its videos or engaging with its posts. Because these people already

Remarketing, Retargeting Ads

Retrieval-augmented generation (RAG) is a technique in which an AI first looks up relevant passages in a set of documents, then writes its answer from them. It lets a model

RAG, Retrieval Augmented Generation

Return on investment (ROI) measures how much an investment earns compared with what it cost, usually shown as a percentage. In marketing, it is the profit a campaign generated, minus

ROI, Marketing ROI

The SCQA framework structures a message in four steps: Situation, Complication, Question and Answer. It sets out a familiar context, introduces the problem that disturbs it, raises the question the

SCQA, SCQA Model

Search engine optimisation (SEO) is the work of improving a website and its content so they rank higher in unpaid results on Google and other search engines. It covers what

SEO, Search Engine Optimization

Shadow AI is the use of AI tools at work without the knowledge or approval of the organisation, such as staff pasting client data into a free chatbot. It is

Unsanctioned AI, Shadow AI Usage

Snackable content is short, easy-to-consume content made to be taken in within seconds, such as a short video, a meme, a quote graphic or a short carousel. It is built

Bite-Sized Content, Micro-Content, Short-Form Content

Social browsers are web browsers with social networking built in, letting people share pages, chat and follow updates without leaving the page. The idea peaked around 2010, before social media

Social Web Browser

Social listening is tracking and analysing what people say online about a brand, its competitors and its field, to inform decisions. It goes beyond answering mentions, looking for patterns in

Social Media Listening, Brand Listening

Social proof is the tendency to follow what other people do when deciding what is right, especially when unsure. In marketing, it takes the form of reviews, testimonials, client logos,

Social Validation, Informational Social Influence

Software as a service (SaaS) is software people use over the internet on a subscription, instead of buying and installing it on their own computers. The provider hosts, maintains and

SaaS

A software development kit (SDK) is a package of tools, code libraries and documentation that developers use to build for a particular platform or service. Apple’s iOS SDK for iPhone

SDK, Devkit

A stock keeping unit (SKU) is a code a business gives each distinct product variant it sells, so it can track stock, sales and orders precisely. A blue T-shirt in

SKU, Stock Code, Item Number

Storyception is an informal name for a story within a story, where one narrative frames or contains another. The word blends story and Inception, the 2010 film built on dreams

Story Within a Story, Frame Narrative, Nested Story

Storytelling in marketing is the use of narrative, with a character, a tension and a change, to make a message easier to understand, remember and trust. It turns facts about

Brand Storytelling, Narrative Marketing, Story-Driven Marketing

Talking points are a short set of agreed key messages that a person or organisation wants to get across in interviews, presentations, meetings or posts. They keep everyone who speaks

Key Messages, Messaging Points

A tech stack is the set of technologies a business or product runs on, from the code and databases behind an app to the software a team uses every day.

Technology Stack, Solution Stack, Marketing Stack

A text expander is a tool that turns a short abbreviation into a longer piece of text as you type, such as an address, a standard reply or a signature.

Text Expansion, Text Snippets, Text Replacement

The 3-Lane Content System, developed by Christophe Moons, sorts every post into one of three lanes and sets a target mix for them across a month. The lanes are Authority,

3-Lane System, Three-Lane Content System, Content Lanes

The 4+1 Hashtag Method, developed by Christophe Moons, is a way of choosing five hashtags per post, each with its own job. Four help new people find the post by

4+1 Hashtag Method, Four Plus One Hashtag Method

Thought leadership is content that offers an original, expert view on a subject, to shape how people think rather than repeat what everyone else says. Done well, it builds the

Thought Leader, Thought Leadership Content

Today I Learned (TIL) is internet shorthand for sharing a surprising fact or piece of knowledge someone has just come across. It comes from Reddit’s r/todayilearned community, where every post

TIL

Touchpoints are all the moments where a customer comes into contact with a brand, from seeing an ad or reading a review to buying and getting support. Together they shape

Customer Touchpoint, Touchpoint, Brand Touchpoint

Transcreation is adapting marketing content for another language and culture, keeping its intent and emotional effect rather than translating word for word. A slogan, a joke or a cultural reference

Creative Translation, Marketing Translation

The Turing Test is a test of machine intelligence that the mathematician Alan Turing proposed in 1950. A judge holds text conversations with a person and a machine, and if

Imitation Game

The UAE Data Protection Law, known as the PDPL, is the federal law that sets the rules for collecting and using personal data in the United Arab Emirates. It took

PDPL, UAE PDPL, Personal Data Protection Law, Federal Decree-Law No. 45 of 2021

An upstream content strategy reaches people before they look for a solution, with content about their wider problems and questions rather than a product. It builds awareness and trust early,

Upstream Content, Top-of-Funnel Content, TOFU Content

User-generated content (UGC) is any content created by customers, fans or followers rather than by the brand itself, such as reviews, photos, videos and posts. Brands share it, with permission,

UGC, Consumer-Generated Content, Customer Content

Vanity metrics are numbers that look impressive but say little about whether marketing is working, such as follower counts, likes or page views on their own. They are easy to

Vanity Metric

Vertical-specific content is written for one industry, such as healthcare, real estate or hospitality, in its own language and around its own problems. It trades a smaller audience for much

Vertical Content, Industry-Specific Content, Niche Content

Vetted data has been checked for accuracy, origin and permission before anyone relies on it, whether for a report, a campaign or training an AI model. Knowing where data came

Verified Data, Validated Data

Vibe coding is building software by describing what you want to an AI tool in plain language and letting it write the code, often without reading it closely. The computer

AI-Assisted Coding, Prompt-Based Coding

Whimsy is a playful, imaginative and slightly unexpected quality in a brand’s design, copy or experience, used to create a moment of delight. It turns functional details, such as an

Playful Branding, Brand Whimsy

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