What marketing is
Marketing is the work that connects something you sell to the people who need it, so that it brings in revenue. The Chartered Institute of Marketing (CIM), the UK's professional body, defines it as "the management process responsible for identifying, anticipating and satisfying customer requirements profitably." The American Marketing Association describes it as creating, communicating, delivering and exchanging offerings that have value for customers, clients, partners and society.
Both definitions describe the same chain of four links:
- Customers. Who has the problem, and what do they need?
- Value. What do you offer that solves that problem better than the other options?
- Channels. Where and how do those customers hear about the offer and buy it?
- Measurement. Did it work, and did it make a profit?
If one link breaks, the chain fails. A great product sold to the wrong people does not sell. A strong advert on a channel your customers never use does nothing. A campaign you never measure cannot be improved.
Do this: Write the four links on a sheet of paper. You will fill them in for a real business as the course goes on.
Strategy, tactics and channels
Beginners often mix these three words up. Here they are with one plain example: a neighbourhood bakery that wants more weekday lunch customers.
- Strategy is the what and the why: the overall choice about who to serve and how to win. Example: "Become the go-to lunch spot for office workers within a 10-minute walk, using fast service and a fixed-price meal deal."
- Tactics are the specific actions that carry out the strategy. Example: "A £7 sandwich-and-drink deal, a loyalty card that gives the tenth lunch free, and a printed menu delivered to nearby offices."
- Channels are the routes that carry your message or product to the customer. Example: the shop window, Google Business Profile, Instagram, an email list, leaflets.
The order matters. Strategy comes first, tactics serve the strategy, and channels are the vehicles for the tactics. A common mistake is to start with a channel ("We need to be on TikTok") before deciding who you are trying to reach and why they should choose you.
Do this: For any business you know, write one sentence of strategy, two tactics and two channels. Check that every tactic supports the strategy.
The four-part pattern used for every channel
Every channel in this course, whether SEO, email, social or paid ads, is taught in the same four-part shape:
- Proven method. The approach that has worked for years, learned first so you understand why it works.
- AI speed-up. Where AI tools can save time, such as drafting, summarising, generating options or analysing data.
- Human check. What a person must review before anything goes live: facts, claims, tone, legality and fit with the strategy.
- Measurement. How you will know whether it worked, using numbers you decide on before you start.
The method comes before the AI because you cannot judge AI output on a task you do not understand. Measurement comes last in the sequence but is planned from the start.
Where AI fits: an assistant, not a decision-maker
Think of AI as a fast, tireless junior assistant. It produces drafts quickly, but it can sound confident while being wrong. AI tools sometimes invent facts, statistics, quotes or sources. You are responsible for whatever you publish.
UK advertising regulation says this plainly. In June 2026 the Advertising Standards Authority (ASA) reminded brands that the CAP Code (the UK's advertising rulebook) applies to AI-generated content with no exceptions. It also said that using automated campaign tools does not remove the advertiser's responsibility. In the ASA's words, advertisers "must always sense-check outputs and remember that they are responsible for the final result."
Three tasks where AI helps
- Drafting first versions of social posts, email subject lines or product descriptions for a person to edit.
- Generating options, such as 20 headline ideas or several angles for a campaign, so you can choose the best.
- Summarising and sorting large amounts of text, such as grouping hundreds of customer reviews into themes.
Three tasks where a person makes the final call
- Choosing the strategy: who to serve, what to offer and what to say no to.
- Approving claims before publication: checking that prices, facts, figures and promises are true and can be backed up.
- Setting and approving budgets: deciding how much money to spend and when to stop spending it.
Do this: Pick one marketing task you do now or plan to do. Write down which part AI could draft and which part you must check yourself.
What comes next
From the next level onward, you will follow one example small business and build its marketing plan step by step. You will use the four links (customers, value, channels, measurement) and the four-part pattern each time. Platforms, features and prices change often, so the course dates its sources and never promises results.
Key takeaways
- Marketing links customers, value, channels and measurement to turn a product into profitable revenue.
- Strategy is the overall choice of who to serve and how to win. Tactics are the specific actions. Channels are the routes to the customer. Decide strategy first.
- Every channel follows the same pattern: proven method → AI speed-up → human check → measurement.
- AI is good at drafting, generating options and summarising. People decide strategy, approve claims and control budgets.
- You are responsible for what you publish, however it was made. AI output must be checked for invented facts.