Your question is Build vs Buy Platform Capability. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're advising an engineering leader who had to choose whether to build a core platform capability internally or adopt an external vendor. The decision affected product velocity, long term differentiation, and the team's ability to support future scale. Leadership wanted a clear recommendation that balanced speed, cost, control, and strategic value.
Tell me about a time you had to make a build-vs-buy decision for a critical platform capability. How did you decide?
A strong answer can anchor on a platform capability such as observability, orchestration, feature storage, or internal developer tooling. For Lambda, a good example is deciding whether to build a first-party telemetry and observability layer for GPU jobs or integrate a third-party stack into the Lambda platform.