IMC is the discipline of making sure every piece of communication in a campaign makes the same underlying argument, regardless of the channel or the format. Most campaigns get the execution right and skip the argument entirely.

In my content design course, student teams work on a real client campaign from brief to final pitch over the course of a semester. The failure mode that appears most consistently is not poor execution. The execution is almost always adequate. The failure mode is launching into execution before the campaign’s central argument has been established. A campaign that has not established its central argument is not a campaign. It is a collection of deliverables.

What IMC Actually Means

IMC is not primarily about consistency of visual identity, though visual consistency is part of it. It is about ensuring that every piece of communication in a campaign is making the same underlying argument to the same specific audience. The argument is not the tagline. The argument is the claim the brand is making about why someone should choose it over every available alternative. A tagline is the surface expression of the argument. The argument is what every creative decision must be in service of. Research on campaign effectiveness consistently finds that campaigns with a clearly defined central proposition outperform campaigns that lack one by a significant margin across awareness, consideration, and conversion metrics.

The Brief as Argument

The campaign brief is where the argument is supposed to be established, and most campaign briefs do not do this adequately. They describe the brand, the product, the target audience, the deliverables required, the timeline, and the budget. What they often omit is the single sentence that answers: what is the one thing we want our audience to believe, feel, or do differently after encountering this campaign? In my courses, the brief exercise requires student teams to write the campaign argument in one sentence before they are allowed to discuss any execution. “We want Korean women aged 25 to 35 who are already aware of our skincare brand to believe that our new formulation is the only one designed specifically for the humidity and UV conditions of Korean summers” is a brief sentence. “We want to increase brand awareness among young Korean women” is not.

A Worked Example: One Argument for a Seoul Meal Kit Brand

Here is what that looks like on a real kind of campaign. Picture Seoyeon, a brand manager at a meal kit company in Seoul that is launching a lower sodium line. The agency’s first brief lists the audience (dual income households in their thirties), the channels (Naver search, Instagram, a KakaoTalk channel, convenience store shelves), the budget and the dates. It is a competent document. It does not say what anyone should believe after seeing the campaign.

The second brief is narrower, and that is the point. It leaves out people who do not cook from kits yet, because they need a different argument first. It names a belief, not a metric, so anyone on the team can look at a draft and ask whether it proves the sentence. Awareness and trial still get measured. They are the result of the argument landing, not a substitute for having one. This is the same discipline the strategy stage asks for in the SOSTAC framework, and skipping it is a large part of why most campaigns fail before the first post goes live.

Testing Every Piece Against the Argument

Once the sentence exists, integration stops being a matter of taste. Every piece of the campaign can be checked against it, channel by channel, before it goes out. I ask teams to fill in a simple table during the review meeting, one row per channel, and to be honest in the middle column.

The rows that fail are rarely the expensive ones. Here it is the KakaoTalk message and the service script, the two places where a customer who already likes the brand hears from it most often. That pattern is common. Big creative gets reviewed against the brief, and the small, frequent touchpoints get written by whoever is free that afternoon. To see every touchpoint in one place before the review, the Touchpoint Journey Mapper lays them out from first contact to repeat purchase, and the PESO Model Mapper sorts them by who controls the message.

One warning about using the table. Teams often respond to a failing row by bolting the argument on as an extra line, so the KakaoTalk message keeps the old offer and gains a sentence about sodium at the end. That passes the check on paper and fails it in practice. The better fix is to rebuild the piece around the belief: the label comparison becomes the message, and the offer becomes the reason to act on it this week.

The Korean Marketing Context

IMC in the Korean market requires additional consideration of the platform ecosystem. A campaign that is integrated across Western platforms cannot simply be translated to the Korean market. It needs to be integrated across the Korean platform ecosystem: Naver, KakaoTalk, YouTube, and the relevant domestic platforms for the specific audience. The argument, however, if it is genuinely strong and genuinely specific, translates across platforms and cultures. Research on international marketing campaigns consistently shows that campaigns with a single, strongly defined proposition outperform localised campaigns that vary the core message by market, even when the localised variations are culturally adapted. The market adaptation should be in how the argument is expressed, not in what argument is being made.

Why the Korean Platform Mix Raises the Stakes

The case for one argument is stronger in Korea for a plain reason: the same person meets your brand in more places. The Korea Press Foundation’s 2024 social media user survey of 3,000 adults found that people use an average of 4.25 social media services, led by KakaoTalk at 98.9% and YouTube at 84.9%, with Instagram at 80.9% among people in their twenties (한국기자협회, February 2025). Each of those services has its own grammar, and its own idea of what deserves attention, which I looked at in The Algorithm Is Not Neutral. That is exactly why the argument has to be fixed before the formats are.

Step two is the one teams resist and the one that works. If the logo is the only thing tying a reel to a search ad, the campaign is visually consistent and argumentatively scattered. The pressure to skip the check is real, because Korean audiences live on their phones. In the Korea Communications Commission’s 2024 broadcast media survey of 8,316 people aged 13 and over, 75.3% named the smartphone as the medium they could not do without in daily life, up from 70% a year earlier (한국기자협회, December 2024). A phone screen gives each message a few seconds and no context. The argument is the only thing that lets those few seconds add up. If the campaign will also run outside Korea, the global brand voice audit is the next check.

→ The My Classroom section covers the frameworks from my content design course, made public and applied beyond the university context. If you are building a campaign or want to bring IMC thinking to your marketing team, the Work With Us page covers what a workshop or consulting engagement looks like.

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CareerCommsTwenty five years in business communication, marketing and branding, twenty four of them in Seoul. Written by a university lecturer and consultant; the frameworks here are the ones we teach with. About · For companies