Building a Multi-Cloud Data Strategy with AWS, Snowflake, and Terraform

Enterprises are moving from “single cloud first” to multi-cloud by design to mitigate vendor lock-in, meet data-residency mandates, and strengthen business continuity. This article proposes a pragmatic reference architecture that uses AWS for foundational landing zones and storage, Snowflake for cross-cloud analytics and data mobility, and Terraform for consistent, policy-enforced provisioning. It outlines design principles, a step-by-step implementation blueprint, reliability and DR patterns (including Snowflake replication/failover and client redirect), and FinOps guardrails that embed cost accountability into day-0 design.