HttpClient (typed client) posts prompt + context, streams or waits for JSON, logs tokens/cost, never hardcode keys — use Key Vault/config. ShopNest “ask about order status” bot calls Azure OpenAI with order id context only.
IBM rounds often probe: Cloud.
Themes commonly reported in public MNC interview experiences (AmbitionBox / LinkedIn / Glassdoor-style). Practice aloud; keep answers this short in the real round.