Multi-Cloud Security Architecture
One strategy, many clouds. Unified security architecture across AWS, Azure, and GCP — hub-and-spoke design, identity federation, landing zones, and cross-cloud governance.
Architecture · Identity · Governance
End-to-end multi-cloud security — from secure reference architecture design through identity federation, policy guardrails, and compliance reporting.
Secure Multi-Cloud Reference Architecture
Designing unified security architectures across AWS, Azure, and GCP — hub-and-spoke network topology, shared services VPC design, transit gateway security, and inter-cloud traffic inspection to give consistent protection across your entire cloud footprint.
- Hub-and-spoke network topology design
- Shared services VPC / VNet architecture
- Transit gateway and inter-cloud routing security
- Data egress filtering and traffic inspection flow
Multi-Cloud Identity Federation & Access Control
Establishing unified identity across cloud platforms — federated authentication (Entra ID, AWS IAM Identity Center, Google Cloud Identity), cross-cloud role design, least-privilege access policies, and privileged access management across providers.
- Identity federation strategy (SAML, OIDC)
- AWS IAM Identity Center / Entra ID integration
- Cross-cloud least-privilege role design
- Privileged access management across providers
Unified Multi-Cloud Governance & Compliance
Building governance frameworks that work consistently across all your cloud providers — unified tagging strategy, security guardrails, policy-as-code enforcement (AWS SCP, Azure Policy, GCP Org Policy), and compliance reporting for SOC 2, ISO 27001, and PCI-DSS.
- Multi-cloud policy definition (SCP, Azure Policy, GCP Org Policy)
- Tagging strategy and enforcement
- Cost and security guardrail configuration
- Unified compliance reporting across providers
Security Gaps Live in the Seams Between Clouds
Each cloud platform has its own security model, its own identity system, its own network construct, and its own compliance tooling. Organizations that adopt multiple clouds without a unified architecture end up with disconnected security silos — each cloud secured in isolation, but the connections and seams between them left unprotected.
A unified multi-cloud security architecture closes these gaps — consistent identity, consistent policy enforcement, consistent network segmentation — regardless of which cloud a workload lives in.
Identity Sprawl
Separate identities in each cloud create inconsistent access controls and privilege escalation paths.
Governance Gaps
Cloud-specific policies miss cross-cloud data flows — compliance reporting becomes incomplete.
Blind Spot Connectivity
Inter-cloud traffic without inspection bypasses all security controls in both environments.
Lateral Movement Risk
Attackers pivot from a poorly-secured cloud account into better-secured ones via shared identity.
5-Phase Multi-Cloud Architecture Design
From current-state cloud inventory and architecture blueprint design through identity federation, policy governance, and landing zone deployment.
Current State Assessment & Cloud Inventory
Documenting your existing multi-cloud footprint — all accounts, subscriptions, and projects across AWS, Azure, and GCP, their network topology, identity configuration, and current security controls. We identify the gaps between your current state and a unified security architecture.
Architecture Blueprint Design
Designing your target-state multi-cloud security architecture — hub-and-spoke topology, inter-cloud connectivity model (transit gateway / Azure Virtual WAN / NCC), shared services placement, traffic inspection points, and security control plane design.
Identity & Access Model Design
Designing the cross-cloud identity model — identity provider selection and federation configuration (Entra ID as IdP, AWS IAM Identity Center, Google Cloud Identity), cross-cloud role design aligned to least privilege, and privileged access management integration.
Governance & Policy Framework
Establishing the governance controls that run consistently across all cloud providers — policy-as-code (SCP, Azure Policy, GCP Org Policy), tagging strategy, security guardrail configuration, and unified compliance reporting pipeline.
Implementation Roadmap & Landing Zone Deployment
Delivering a prioritized implementation roadmap and supporting the deployment of your secure cloud landing zones — AWS Control Tower, Azure Landing Zone, or GCP Landing Zone — with all security controls pre-configured to the agreed architecture.
Complete Multi-Cloud Security Coverage
From landing zone design and hub-and-spoke topology through inter-cloud connectivity, identity federation, policy guardrails, and unified compliance reporting.
Cloud Landing Zone Security
Designing and deploying secure landing zones (AWS Control Tower, Azure Landing Zone, GCP Landing Zone) with pre-configured SCPs, Azure Policy, and org policies that enforce security guardrails from the first workload.
Hub-and-Spoke Network Design
Designing hub-and-spoke network topologies with centralized egress, centralized inspection (firewall sandwiching), and spoke segmentation — applicable to AWS Transit Gateway, Azure Virtual WAN, and GCP NCC.
Inter-Cloud Connectivity Security
Securing the connectivity between cloud platforms — AWS Direct Connect / Azure ExpressRoute / GCP Interconnect configurations, VPN mesh security, and transit gateway peering with traffic inspection.
Identity Federation
Federated identity across AWS, Azure, and GCP — configuring SAML 2.0 and OIDC federation from the enterprise IdP (Entra ID, Okta, Ping) to all cloud platforms with consistent MFA and conditional access policies.
Policy-as-Code Governance
Implementing policy guardrails as code — AWS SCPs, Azure Policy initiatives, and GCP Org Policies — deployed through IaC (Terraform) to enforce consistent security baselines across all cloud accounts.
Compliance Reporting
Building a unified compliance reporting pipeline across cloud providers — aggregating findings from AWS Security Hub, Microsoft Defender for Cloud, and Google Security Command Center into a single compliance dashboard.
Architecture That Actually Works Across All Three Clouds
Multi-cloud security requires native expertise in each platform and the architectural thinking to make them work as a unified system — not just applying one cloud's model to the others.
Multi-Cloud Native Expertise
Deep design experience across AWS, Azure, and GCP — not just one platform with a 'and also supports other clouds' claim. We know where the seams are between platforms and how attackers exploit them.
Architecture-First Approach
We design the architecture before selecting tools. This means your security stack fits your topology, not the other way around — avoiding the tool sprawl that plagues reactive multi-cloud programs.
Identity as Foundation
Every multi-cloud architecture we design treats identity as the new perimeter. Cross-cloud identity federation and least-privilege access design are built into the foundation, not bolted on later.
Governance at Scale
We help you enforce security policies as code across hundreds of cloud accounts and subscriptions — using platform-native guardrails (SCP, Azure Policy, GCP Org Policy) that scale without manual review.
Cloud Platforms & Technologies We Design For
Frequently Asked Questions
Everything you need to know about multi-cloud security architecture
Design Security That Works Across Every Cloud
Your multi-cloud environment deserves a unified security architecture — not a patchwork of disconnected controls. Let's design it right from the start.
Get in Touch
Ready to secure your future? Reach out to us for a consultation.