Cloud Architecture
Hybrid cloud is an IT architecture that combines on-premise infrastructure (private servers, data centres) with public cloud services (AWS, Azure, GCP). Applications and data move between the two environments based on requirements like cost, performance, regulation, or data sensitivity.
In hybrid cloud, businesses run different workloads in different environments: regulated data + sensitive applications stay on-premise, while elastic workloads (web servers, analytics, batch processing) leverage public cloud scalability. Modern hybrid cloud uses tools like AWS Outposts, Azure Arc, Azure Stack Hub, Google Anthos to extend public cloud management plane to on-premise hardware. For Indian businesses, hybrid cloud is common in BFSI (sensitive data on-prem, customer-facing apps in cloud), manufacturing (factory floor systems on-prem, ERP in cloud), and healthcare (patient records on-prem, telemedicine in cloud).
Industries served: BFSI, Manufacturing, Healthcare, Government, Insurance, Energy & Utilities, Telecom
Related terms: Private Cloud, Public Cloud, Multi-Cloud, Edge Computing, Cloud Bursting
Three reasons: (1) Data sovereignty / regulation — BFSI keeps sensitive customer data on-prem for RBI compliance while running customer-facing apps in cloud, (2) Existing investment — Indian enterprises with ₹5-50 crore on-prem investments don't want to abandon them, (3) Performance — factory floor systems (manufacturing OT) need local latency that cloud cannot match. Hybrid lets you keep the best of both.
Common pattern: customer-facing apps (mobile banking app, web banking) on AWS Mumbai for elasticity; core banking system on-premise for RBI compliance; data warehouse on-premise for sensitive analytics; ML/AI workloads on cloud for elastic compute. AWS Direct Connect or Azure ExpressRoute provides dedicated low-latency link between cloud and on-prem.
Hybrid cloud: combines on-prem + public cloud (one or more). Multi-cloud: uses multiple public clouds (AWS + Azure + GCP) without on-prem. They are not mutually exclusive — an Indian enterprise can be both hybrid AND multi-cloud (on-prem + AWS + Azure). Common reasons for multi-cloud: vendor diversification, region availability, specific service strengths.
AWS Outposts (extends AWS to on-prem), Azure Arc (manages on-prem servers/databases as Azure resources), Azure Stack Hub (full Azure stack in your data centre), Google Anthos (manages Kubernetes across cloud + on-prem). For multi-cloud management: HashiCorp Terraform, Pulumi, Crossplane. Indian enterprises commonly use Azure Arc (familiar Microsoft stack) or AWS Outposts (familiar AWS).
Total cost depends on workload mix. Hybrid cloud often saves cost over pure on-prem (cloud elasticity reduces over-provisioning) but adds management complexity. Over pure cloud, hybrid can save on regulated workloads (avoid cloud premium for on-prem-able data) but adds on-prem capex + ops. For most Indian mid-large enterprises with existing on-prem and elastic workload needs, hybrid is the right architecture.
Free hybrid cloud architecture review for Indian enterprises — AWS, Azure, on-prem, sovereign cloud.