Buyer Persona

Buyer personas migrated to marketing from product design — Alan Cooper formalised the 'persona' concept in the late 1990s, and B2B marketers picked it up shortly after. The core idea is that turning an abstract target audience into a concrete character speeds up decisions. 'B2B SMB marketers' is a label; 'Jiyeon Kim, 32, marketing manager, 60-hour weeks, biggest pain is reporting automation, has to present KPIs to leadership every Tuesday' is a person — and a person produces sharper copy, ad targeting and feature calls.

A useful persona usually spans six or seven dimensions: demographics (age, role, income), daily context (workload, tooling), core goals (KPIs, career drivers), pain points and frustrations, information diet (which channels they consume), decision authority (do they buy alone or need approval), and characteristic vocabulary. The vocabulary section is the most underrated — copying actual phrases from interviews is consistently the highest-leverage source for landing-page and ad copy.

The most common failure is letting personas calcify into fictional people built in a conference room. Without ongoing interviews and data, they drift into a tool marketers use to justify their own hypotheses, and within a quarter or two the document is meaningfully detached from reality. The safe operational pattern is five to ten new customer interviews per quarter and a habit of listening to recorded sales calls. Tools like Gong and Modjo have made this dramatically easier in Korea, where call-recording adoption has accelerated noticeably.

AI has given personas two new jobs. First, dropping a persona into ChatGPT or Claude as context lets you simulate how that persona would react to a piece of copy — not a substitute for real interviews, but a fast directional check before testing. Second, the persona's AI-search behaviour is now a measurable surface. Cataloguing the five or ten category-level prompts a 'B2B SaaS marketing manager' typically types into ChatGPT, then tracking how your brand appears in those answers each quarter, has quietly become a standard practice in GEO programs.

Don't conflate personas with ICPs. ICP defines a company (revenue, industry, size); persona defines a person inside that company. B2B deals usually involve three to five personas in a single ICP — user, decision-maker, economic buyer — and each needs distinct messaging, content and landing experiences. Companies that try to drive everything from a single persona end up with vague copy and softer conversion rates than they should be running.