Modeling Hybrid Cloud Architectures in Archi and Sparx EA

Why Model Hybrid Cloud Architectures?

Today’s enterprise IT environments are rarely homogenous. Most organizations operate in hybrid environments that combine on-premise infrastructure, private clouds, public clouds (such as AWS, Microsoft Azure, and Google Cloud), and edge computing setups.

Modeling these complex hybrid environments is essential to:

Visualize and communicate infrastructure and application deployment
Design scalable, resilient, and secure solutions
Ensure architectural governance and compliance
Enable cross-domain collaboration and impact analysis

Key Architectural Dimensions in Hybrid Cloud

Whether using Archi or Sparx EA, a hybrid model should address:

Deployment Topology: Distribution of workloads across data centers, public cloud regions, and edge nodes
Connectivity: VPNs, Direct Connect, Service Meshes, and Integration Hubs
Security: Identity management, encryption zones, firewalls, and network segmentation
Compliance & Monitoring: Data residency, audit trails, performance metrics

Modeling in Sparx EA

Sparx EA allows deep hybrid modeling using multiple notations:

ArchiMate: to abstract logical and physical cloud elements
UML Deployment Diagrams: for technical infrastructure
Custom MDGs: to add cloud provider-specific icons and tags

Recommended Sparx EA Practices

Create Viewpoints such as:
- Cloud-Native App Deployment
- Data Flow Across Zones
- Compliance and Access View
Use Technology Node and Device to represent compute resources (VMs, clusters, services)
Leverage Information Flow and Deployment connectors to trace dependencies
Organize the model in layers: Business – Application – Technology
Tag elements with metadata such as Region , Cloud Provider , Availability Zone
Use Prolaborate to build interactive dashboards and compliance maps

Modeling in Archi

Archi is a lightweight, ArchiMate-focused tool that works well for visualizing hybrid cloud environments for mid-sized organizations.

Recommended Archi Practices

Use Technology Node , Technology Device , Technology Interface to map out compute and connectivity
Visualize regions and providers using colored boxes or overlays
Use Communication Path for VPNs and inter-zone links
Document Data Objects and Artifact elements to track database and file storage
Develop custom viewpoints: e.g., “Operational View”, “Security View”, “Edge View”

Hybrid Architecture Patterns to Model

Multi-cloud Failover: Applications running in Azure primary region, failing over to AWS
Shared Identity Management: Centralized IDP with LDAP and Azure AD integration
Hybrid Data Warehousing: On-premise OLTP → cloud DWH (e.g., Snowflake, BigQuery)
Edge Computing: Devices ingesting data at edge, processing in cloud

Governance and Compliance Tips

Use Tagged Values like:
- Compliance: GDPR
- Encryption: AES-256
- SLAs: 99.9%
Document access control boundaries using Groupings and Zones
Label data residency and retention requirements
Baseline hybrid deployments regularly and track evolution with versioning in EA

Conclusion

Modeling hybrid cloud architectures in Sparx EA and Archi gives enterprise architects the power to plan, communicate, and govern complex deployments across multiple environments. Sparx EA excels in integrated traceability and automation, while Archi offers speed and simplicity with ArchiMate-specific diagrams. Choosing the right tool depends on your team size, depth of modeling, and integration needs — but both can bring clarity to hybrid cloud design and management.