Enterprise Multi-Cloud Architecture

Secure AWS-GCP Connection with Security Best Practices

graph TB subgraph "On-Premises Enterprise" OnPrem[Enterprise Data Center] OnPrem --> |Dedicated Connection| DX[AWS Direct Connect] OnPrem --> |Dedicated Connection| IC[GCP Interconnect] end subgraph "AWS Tenancy" subgraph "AWS Security Layer" IAM_AWS[AWS IAM + MFA] WAF_AWS[AWS WAF] SG_AWS[Security Groups] NACL_AWS[Network ACLs] CT_AWS[CloudTrail Logging] CM_AWS[Config Compliance] end subgraph "AWS Network" VPC_AWS[Production VPC] TGW_AWS[Transit Gateway] VPN_AWS[Site-to-Site VPN Backup] VPCE_AWS[VPC Endpoints] end subgraph "AWS Compute" EC2_AWS[EC2 Instances] EKS_AWS[EKS Clusters] LAMBDA_AWS[Lambda Functions] end DX --> TGW_AWS VPN_AWS --> TGW_AWS TGW_AWS --> VPC_AWS VPC_AWS --> EC2_AWS VPC_AWS --> EKS_AWS VPC_AWS --> LAMBDA_AWS end subgraph "GCP Tenancy" subgraph "GCP Security Layer" IAM_GCP[GCP IAM + 2FA] CAA_GCP[Cloud Armor] FW_GCP[Firewall Rules] AL_GCP[Audit Logs] SCC_GCP[Security Command Center] end subgraph "GCP Network" VPC_GCP[Production VPC] CR_GCP[Cloud Router] VPN_GCP[Cloud VPN Backup] PSC_GCP[Private Service Connect] end subgraph "GCP Compute" GCE_GCP[Compute Engine] GKE_GCP[GKE Clusters] CF_GCP[Cloud Functions] end IC --> CR_GCP VPN_GCP --> CR_GCP CR_GCP --> VPC_GCP VPC_GCP --> GCE_GCP VPC_GCP --> GKE_GCP VPC_GCP --> CF_GCP end subgraph "Cross-Cloud Connection" subgraph "Primary Path" AWS_ROUTER[AWS Transit Gateway] GCP_ROUTER[GCP Cloud Router] AWS_ROUTER -.->|IPSec Tunnel
AES-256 Encryption| GCP_ROUTER end subgraph "Backup Path" VPN_TUNNEL[Multi-Path VPN
BGP Routing] VPC_AWS -.->|Encrypted Backup| VPN_TUNNEL VPN_TUNNEL -.->|Encrypted Backup| VPC_GCP end end subgraph "Shared Security Services" subgraph "Centralized Security" SIEM[Enterprise SIEM
Splunk/Sentinel] SSO[Single Sign-On
SAML/OIDC] KMS_SHARED[Cross-Cloud KMS
HashiCorp Vault] MONITOR[Multi-Cloud Monitoring
Datadog/New Relic] end CT_AWS --> SIEM AL_GCP --> SIEM IAM_AWS --> SSO IAM_GCP --> SSO EC2_AWS --> KMS_SHARED GCE_GCP --> KMS_SHARED end %% Security Best Practices Styling classDef security fill:#ff6b6b,stroke:#d63031,stroke-width:3px,color:#fff classDef network fill:#74b9ff,stroke:#0984e3,stroke-width:2px,color:#fff classDef compute fill:#55a3ff,stroke:#2d3436,stroke-width:2px,color:#fff classDef connection fill:#fd79a8,stroke:#e84393,stroke-width:3px,color:#fff classDef shared fill:#fdcb6e,stroke:#e17055,stroke-width:2px,color:#fff class IAM_AWS,WAF_AWS,SG_AWS,NACL_AWS,CT_AWS,CM_AWS,IAM_GCP,CAA_GCP,FW_GCP,AL_GCP,SCC_GCP security class VPC_AWS,TGW_AWS,VPN_AWS,VPCE_AWS,VPC_GCP,CR_GCP,VPN_GCP,PSC_GCP network class EC2_AWS,EKS_AWS,LAMBDA_AWS,GCE_GCP,GKE_GCP,CF_GCP compute class AWS_ROUTER,GCP_ROUTER,VPN_TUNNEL connection class SIEM,SSO,KMS_SHARED,MONITOR shared
Security Controls: IAM, WAF, Firewalls, Logging
Network Layer: VPCs, Gateways, VPNs
Compute Services: VMs, Containers, Functions
Cross-Cloud: Encrypted Tunnels, Routing
Shared Services: SIEM, SSO, Monitoring

Architecture Overview

This diagram illustrates a comprehensive multi-cloud security architecture connecting AWS and GCP enterprise environments. Key security features include:

Security Practices & Risk Mitigation

Security Practice/Tool AWS Implementation GCP Implementation Risk Addressed
Identity & Access Management AWS IAM with MFA GCP IAM with 2FA Unauthorized access, credential compromise, privilege escalation
Single Sign-On SAML/OIDC integration SAML/OIDC integration Identity sprawl, password fatigue, inconsistent access controls
Network Segmentation Security Groups, NACLs Firewall Rules Lateral movement, unauthorized network access, data exfiltration
Web Application Protection AWS WAF Cloud Armor Application-layer attacks, DDoS, SQL injection, XSS
Dedicated Connectivity Direct Connect Cloud Interconnect Internet-based attacks, bandwidth limitations, latency issues
Encrypted Tunnels IPSec with AES-256 IPSec with AES-256 Data interception, man-in-the-middle attacks, eavesdropping
Backup Connectivity Site-to-Site VPN Cloud VPN Single point of failure, connectivity outages, business continuity
Audit Logging CloudTrail Audit Logs Compliance violations, forensic gaps, insider threats
Security Monitoring Config Compliance Security Command Center Configuration drift, security misconfigurations, threat detection
Centralized SIEM Enterprise SIEM (Splunk/Sentinel) Enterprise SIEM (Splunk/Sentinel) Fragmented visibility, delayed threat response, compliance reporting
Key Management Cross-cloud KMS (HashiCorp Vault) Cross-cloud KMS (HashiCorp Vault) Key sprawl, encryption key compromise, data breach
Private Endpoints VPC Endpoints Private Service Connect Data exposure over public internet, service enumeration
Multi-Cloud Monitoring Datadog/New Relic Datadog/New Relic Blind spots, performance degradation, incident response delays
Network Routing Control Transit Gateway Cloud Router Uncontrolled traffic flow, routing loops, network policy violations
BGP Routing Multi-path BGP Multi-path BGP Routing hijacks, path manipulation, network availability

High-Impact Risks Mitigated

Data Breach

Encryption, access controls, network segmentation

Compliance Violations

Comprehensive logging, monitoring, and audit trails

Service Disruption

Redundant connectivity, backup paths, monitoring

Unauthorized Access

MFA, IAM, network controls, private connectivity

Operational Risks Mitigated

Configuration Drift

Automated compliance monitoring and alerting

Incident Response Delays

Centralized SIEM and monitoring platforms

Vendor Lock-in

Multi-cloud architecture with standardized security tools

Key Management Complexity

Centralized cross-cloud key management system

Client Environment Assessment

To customize this architecture for your specific environment, please provide information about your current infrastructure and requirements.

🏢 Current Infrastructure

🔐 Security & Compliance

🌐 Network & Connectivity

🚀 Workloads & Applications

📊 Data & Storage

🛡️ Risk & Governance

⚙️ Operations & Management