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Drive a Monolith-to-Services Migration Across 8 Teams (TPM)

The long-horizon technical program case. Tests strangler-fig strategy, sequencing, traffic-based progress metrics, and finishing the last 10%.

Interview prompt

Your company wants to migrate a large monolith to services. Eight teams are involved and it will take multiple quarters. How do you structure and drive the program?

What interviewers evaluate

Do you anchor the migration in measurable business outcomes rather than 'microservices' as a goal?
Do you choose incremental strangler-fig over a big-bang rewrite, and measure progress in traffic?
Do you sequence extractions and build the paved road before teams migrate?
Do you protect ongoing business delivery (capacity allocation, not feature freeze)?
Do you manage the data-migration risk and define exit criteria for the last 10%?

A framework to structure your answer

Anchor the why - concrete outcomes with baselines (deploy frequency, blast radius, scaling constraints); this keeps the program funded in quarter 3.

Premium unlocks all 6 framework steps, a strong worked answer, 3 common variants, 5 pitfalls to avoid and 3 likely follow-ups.

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