What Is Marketing? Purpose, Scope, and Its Relationship to Sales
Shusaku Yosa

Marketing is the activity of understanding customer needs, creating and delivering value, and developing relationships through use and exchange. It includes decisions about the offer, price, buying process, and customer experience, as well as communication.
The aim is not to maximize the number of campaigns. It is to decide whose problem you can address, what you can responsibly provide, and how to test that choice.
What official definitions emphasize
The Japan Marketing Association's 2024 definition emphasizes creating value with customers and society and developing relationships. The American Marketing Association's definition also covers creating, communicating, delivering, and exchanging value.
These are summaries, not direct quotations. Their emphasis differs, but neither limits marketing to advertising or selling. In practice, ask which part of understanding, offering, communicating, or supporting value needs attention.
Marketing, advertising, sales, and branding
Activity | Main question | Example work |
|---|---|---|
Marketing | Whom do we serve, with what value, and how? | Research, offer design, pricing, delivery, campaigns, evaluation |
Advertising | What do we communicate through paid placements? | Media choice, creative production, delivery, response analysis |
Sales | How do we address an individual buying decision? | Consultation, proposals, negotiation, agreements |
Branding | Which promise and perception do consistent experiences support? | Positioning, expression, service consistency |
This is a distinction between activities, not a hierarchy of departments. Roles overlap, especially in small businesses. Sales conversations may inform product decisions. A weak result may reflect price, delivery, or onboarding rather than advertising alone. See branding basics for that dimension.
From understanding to improvement
- Understand: Learn how customers solve the problem today and who uses, chooses, and pays.
- Choose: Specify the audience and value, including what you will not cover.
- Design: Set the offer, price, purchase process, delivery, and support.
- Communicate: Explain the relevant conditions where customers seek information.
- Evaluate: Review responses, purchases, usefulness, profit, and ongoing use.
This is an iterative process. Early delivery can reveal problems that reshape the audience or offer. Our marketing strategy guide develops the execution plan.
A fictional small-service example
All research, prices, counts, and service details below are fictional. Imagine a small provider designing training for people managing employees for the first time.
Stage | Fictional design or observation | Next question |
|---|---|---|
Research | Four of six interviewed contacts mention difficulty running one-to-one meetings | Recruitment bias, decision-makers, willingness to pay |
Value | Small-group practice and feedback on management conversations | Can existing materials or internal training substitute? |
Price and delivery | $2,000 per company for up to ten participants; two online sessions with materials | Preparation costs, instructor capacity, scheduling effort |
Communication | A page explains audience, topics, dates, and included work | Can a buyer understand the offer and submit a relevant question? |
Evaluation | Track valid inquiries, contracts, completion, feedback, and gross profit | Do expectations match the experience, and why would customers return? |
This example prioritizes clear service outcomes and conditions before choosing an advertising format. Six conversations do not establish market-wide demand. Use a pilot to revise the audience and offer rather than claiming the research proves success.
Separate responses from customers
If fictional advertising spend is $1,000 and generates ten valid inquiries, advertising-only inquiry CPA is $100. If two companies buy, advertising spend per customer is $500. Neither automatically includes the sales, production, and preparation costs needed for a total customer-acquisition measure.
Google Ads defines average CPA using the cost and count of specified conversions. State whether the action is an inquiry, purchase, or registration. An advertising response alone does not establish profit or customer satisfaction.
Choose frameworks and tactics around the question
Use 3C analysis to compare customer, competitor, and company evidence; STP to consider audience and positioning; and the 4Ps to develop product, price, place, and promotion. There is no obligation to complete every framework in one fixed order. Our framework guide compares their uses.
Likewise, choose articles, email, events, or advertisements around customer behavior. Advertising performance depends on competition, budget, measurement, and purchase timing; it is not effective at every budget by default. Explore channel decisions in the web marketing guide.
B2B decisions may involve several stakeholders, while some consumer purchases also take months. Avoid assuming business buyers are always rational and consumers always emotional. Investigate actual risks, decision roles, and usage.
Six starting decisions
- Audience and problem.
- Value compared with current alternatives.
- Price, scope, staffing, cost, and timing.
- Communication and purchase process.
- Evidence needed for the next decision.
- Execution owner, decision owner, and review date.
Keep records and measurement conditions even for small pilots. To coordinate initiative budgets, progress, and project KPIs, review Xtrategy's features.