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Cloud Perimeter Architecture:

Build enforcement and segmentation where your workloads live with scalable perimeters that adapt to how you actually use cloud.

Why Cloud Perimeters Matter

In cloud and hybrid environments, the perimeter isn't going away; it's just everywhere. Static firewalls and port-centric security models no longer align with dynamic workloads, elastic IPs, and distributed identities. The modern perimeter must move with your infrastructure and reflect application context, not just network boundaries.

IVI helps clients rethink perimeter design across AWS, Azure, and hybrid environments. We design enforcement zones that protect ingress, egress, and lateral movement while supporting automation, observability, and scalable policy models.

Cloud perimeter strategy isn't just about protecting assets, it's about enabling secure, adaptable architecture that doesn't slow you down.

 

Key Business Objectives:

  • Enforce access policies across dynamic workloads and services
  • Design scalable segmentation that aligns to applications and identity
  • Secure cloud ingress/egress without introducing bottlenecks
  • Enable observability into cloud traffic flows and enforcement outcomes
  • Integrate with native cloud controls (e.g. Security Groups, NSGs, firewalls)

  • What IVI Delivers

    Architecture Assessment & Traffic Mapping

    We map current enforcement zones, workload groupings, access patterns, and internet ingress/egress design. We baseline exposure risks and identify gaps in segmentation and observability.

  • Reference Architecture & Security Zones

    We define and validate a reference perimeter model, including zones, segmentation tiers, shared service patterns, DMZs, and third-party connections.

  • Platform Integrations Design

    We align enforcement with the tools you already use: cloud-native security controls (e.g. AWS TGW, Azure Firewall, Palo Alto VM-Series), SIEM integrations, and workload tagging models.

     

  • Policy Design & Implementation

    We develop policies that align with the reference architecture, covering internal trust boundaries, inter-VPC/VNet access, hybrid connectivity, and external access control.

     

  • Validation & Observability Integration

    We validate that policy enforcement behaves as expected, and integrate with observability platforms (e.g. CloudWatch, Azure Monitor, third-party NDR, or APM tools) to monitor for misconfigurations or drifts.

  • Documentation & Operations Enablement

    We provide reference documentation, change workflows, and training to ensure your team can manage the new perimeter without introducing operational overhead.

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Technology Focus Areas

AWS: Transit Gateway design, Security Group modeling, NACL cleanup, firewall integration, traffic mirroring

Azure: VNet peering, NSG/ASG design, Azure Firewall policy deployment, routing and UDR validation

Hybrid: Consistent enforcement from data center to cloud, SD-WAN integration, overlay and underlay policy alignment

Multi-Cloud: Standardized perimeter zones and policy enforcement across multiple providers with centralized visibility and control

 

Typical Project Flow

 

1

Cloud & network inventory collection

2

Ingress/egress and workload access mapping

3

Reference perimeter model design

4

Enforcement zone and policy configuration

5

Validation and observability integration

6

Transition to ops and support documentation

Expected Outcomes for Your Organization

  • Scalable perimeter that aligns with cloud-native practices
  • Improved workload isolation and lateral movement control
  • Integrated visibility into policy violations and enforcement actions
  • Reduced complexity and operational friction
  • Stronger alignment between security and cloud operations teams

Frequently Asked Questions

Isn't the cloud supposed to eliminate the need for a perimeter?

The perimeter didn't disappear, it evolved. In cloud environments, the "perimeter" is now distributed across VPCs, cloud-native firewalls, ingress controllers, service meshes, and identity systems. Our job is to help you define, enforce, and observe that perimeter in a way that reflects how you actually use the cloud.

What problems does IVI typically solve in cloud perimeter engagements?

We help eliminate flat network designs, insecure VPC-to-VPC peering, unmanaged public exposure, and misaligned security groups. We also address policy sprawl across hybrid environments and help clients shift to identity-based segmentation.

Which cloud platforms does IVI support?

We work across AWS, Azure, and GCP, including hybrid environments. We help you design perimeter controls using native tools (e.g., AWS Security Groups, Azure NSGs, firewall policies) and integrate with third-party platforms where needed.

Do you support multi-cloud perimeter architectures?

Yes. We help organizations define consistent perimeter enforcement across multiple cloud providers, data centers, and edge locations, while avoiding over-centralization or duplicated policies.

How do you enforce segmentation in the cloud?

We use a combination of VPC architecture, route table isolation, firewall policies, identity-aware controls, and network access tiers. We also help design tag-based segmentation and integrate with cloud-native posture management platforms for continuous drift detection.

Do you integrate cloud perimeter controls with our SIEM?

Absolutely. Observability is built into every IVI design. We ensure flow logs, firewall events, and threat telemetry are routed to your existing logging platform (e.g., Splunk, Sentinel, QRadar) for compliance and response workflows.

Can this help us align to Zero Trust?

Yes. Cloud perimeter architecture is foundational to Zero Trust. We help you move from network-centric enforcement to identity- and application-centric policy models, while maintaining clarity and operational control.