IBM Level 3 Senior

Multi-tenant SaaS data isolation?

TenantId on every row + forced filters, or separate DB per tenant for strict isolation. ShopNest B2B catalogs filter by TenantId in every query.

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.

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