Multi-Cloud Strategies with Azure

Multi-cloud means operating workloads across more than one cloud provider — for example, using Azure for most services while also using AWS for a specific machine learning platform or Google Cloud for BigQuery analytics. Organisations adopt multi-cloud to: avoid vendor lock-in, leverage each provider's best-in-class services, meet contractual or regulatory requirements to avoid single-provider dependency, or because mergers and acquisitions brought together companies that standardised on different clouds. Multi-cloud is the norm in large enterprises today.

Multi-cloud introduces significant operational challenges: Skill sprawl — teams need expertise in multiple cloud platforms. Inconsistent governance — each cloud has different IAM, policy, and compliance tooling. Security complexity — different threat models, different security services, different audit logs. Cost management — separate billing portals, different pricing units, and no unified cost view across providers. Network complexity — inter-cloud traffic incurs egress costs and latency. Microsoft addresses many of these with Azure Arc and multi-cloud support in Defender for Cloud.