Skip to content
PMInterviewKit
← All questions
Strategywarm-up

Your note-taking app needs calendar integration. Should you build, buy or partner?

How to approach it

Ask how central calendar is to your product. Core features are often worth building; nice-to-haves can be partnered.

How a strong answer opens

“I'd start by asking how central calendar is to our product. Core features are often worth building, while nice-to-haves can usually be handled through a partner's API.”

Outline of a strong answer

Try answering out loud for a few minutes before you open this.

  1. Clarify user need and strategic importance
  2. Build: control, cost, time
  3. Buy: available companies, cost, integration effort
  4. Partner: speed, dependence on another company
  5. Compare on time, cost, risk and control
  6. Recommend: likely partner via APIs first, build later if core

Where this question usually goes wrong

Defaulting to building it in-house without comparing time, cost and control against using an existing calendar API.

Learn the method

Build, buy or partner in Module 5, Product strategy.

The full kit has worked answers in full, start to finish, for every round type. $129 once.

Get one email when the full kit opens

No spam: just one launch email. See our privacy policy.