STP: Segmentation, Targeting, Positioning STP 市場區隔定位

STP is the foundational marketing strategy framework: divide the market into segments (S), select which to serve (T), and define how to win in chosen segments (P). It must be done in sequence — you cannot position without first choosing a target, and you cannot target without first segmenting.

Trigger conditions:

• User launching a new product and needs to define the target audience
• User asks "who is our customer?" or "which segment should we focus on?"
• User wants to craft a positioning statement or differentiation strategy
• User's marketing feels unfocused — "we're trying to be everything to everyone"

When NOT to use:

• For competitive industry analysis → use Porter's Five Forces
• For growth path decisions → use Ansoff Matrix
• For internal capability assessment → use SWOT

IRON LAW: Sequential Execution — S Before T Before P

Segmentation FIRST, then Targeting, then Positioning. In that order.
Choosing a target without segmenting first means you're guessing.
Positioning without a clear target means you're positioning for everyone
(which means no one).

IRON LAW: Segments Must Be MAMS

Every segment must satisfy all four criteria:
- Measurable: You can estimate the segment's size and purchasing power
- Accessible: You can reach the segment through available channels
- Material: The segment is large enough to be profitable
- Substantial: The segment is distinct enough to respond differently to
  different marketing mixes

A "segment" that fails any criterion is not actionable.

Step 1: Segmentation — Divide the Market

Use one or more segmentation bases:

Combine bases for sharper segments (e.g., demographic + behavioral).

Produce 3-6 distinct segments. Fewer than 3 means you haven't segmented; more than 6 is too fragmented to act on.

Step 2: Targeting — Select Your Segments

Evaluate each segment on:

Choose a targeting strategy:

• Concentrated: Focus on one segment (highest risk, highest specialization)
• Differentiated: Target 2-3 segments with tailored offers (moderate risk)
• Undifferentiated: Same offer to all (rarely recommended — defeats the purpose of STP)

Step 3: Positioning — Define Your Place in the Customer's Mind

Craft a positioning statement using this template:

For [target segment],
[brand/product] is the [category]
that [key benefit/differentiator]
because [reason to believe].

Then validate positioning against three tests:

1. Relevance: Does the target segment care about this benefit?
2. Differentiation: Can competitors claim the same thing?
3. Credibility: Can you deliver on this promise?

Step 4: Perceptual Map (Optional)

Plot brands on a 2D map using the two most important attributes for the target segment. This visualizes competitive positioning and identifies gaps.

# STP Analysis: {Product/Brand}

Correct Application

Scenario: STP for a new plant-based protein bar in Taiwan

Segmentation (Behavioral + Demographic):

Targeting: Health-Conscious Office Workers — largest segment, underserved (most protein bars target gym-goers), high accessibility via convenience stores.

Positioning: "For busy professionals who skip meals, PlantBar is the plant-based protein bar that replaces a meal in 60 seconds because each bar has 20g protein, 5g fiber, and all essential vitamins — made entirely from whole food ingredients."

Incorrect Application

What went wrong:

• Positioning statement: "For everyone who likes healthy food" → Not a segment. "Everyone" fails the MAMS test (not Measurable, not Substantial as a distinct group). Violates Iron Law.
• Jumped straight to positioning ("we're the premium option") without segmenting or targeting → Violates Iron Law: S before T before P.

• For perceptual mapping techniques, see references/perceptual-mapping.md
• For comparison with other marketing frameworks, see references/framework-comparison.md