← All lessons
Day 13 of 90

Recommendation Strategies

7 min read

Key Concepts

  • 1Recommendation in an agent flow is not one algorithm but a policy: when to explore (show variety) vs exploit (double down on the best-fit item)
  • 2Constraint-satisfaction first: filter to what's actually valid (budget, stock, size), then rank the survivors by fit — never rank first and apologize about constraints later
  • 3Diversity matters: three near-identical black jackets is a worse result set than three genuinely different options spanning price and style, even if all match intent
  • 4Explanation is part of the recommendation: 'this one because it's within budget and ships by Friday' converts better than a bare list, because it reduces the user's evaluation effort
  • 5Cold-start (no history) leans on catalog signals and stated intent; warm users blend in preference memory — the agent must degrade gracefully when data is thin
  • 6Avoid the popularity trap: purely best-seller-driven recommendations erase the personalization advantage that justifies an agent in the first place
  • 7Set size is a UX decision: too few options feels limiting, too many reintroduces the paradox of choice the agent was supposed to solve — three to five is a common sweet spot

Why It Matters for PMs

Directly drives AOV and conversion: The ranking and framing of options is the moment of truth. Good strategy lifts basket size; poor strategy sends users back to manual browsing.
Personalization is the moat: For SMBs, tailored recommendations are the whole value proposition. Defaulting to best-sellers throws away the differentiation an agent is supposed to provide.
Explainability compounds trust: Recommendations paired with clear reasons reduce returns and second-guessing, improving both margin and CLV over time.

Test Your Understanding

Question 1 (Multiple Choice)

What should happen BEFORE ranking products by fit in an agent recommendation flow?

Question 2 (Multiple Choice)

Why is diversity in a result set often better than three near-identical matches?

Question 3 (Multiple Choice)

Relying purely on best-sellers for recommendations primarily undermines...

Question 4 (Short Answer)

How would you balance exploration (variety) vs exploitation (best single match) in an agent's recommendations?

Think about your answer before revealing the explanation.

Question 5 (Short Answer)

Why might pairing each recommendation with a one-line reason increase conversion and reduce returns?

Think about your answer before revealing the explanation.