What an Azure Security Architecture Review Should Cover
A strong security review should examine the environment from end to end. That includes on-premises systems, Azure workloads, hybrid connectivity, identity services, application platforms, databases, storage, monitoring, and operational processes.
In many organizations, these areas are managed by different teams. Network teams may own routing, VPN, firewall, and DNS. Infrastructure teams may own virtual machines, disks, servers, and endpoint services. Application teams may own web apps, APIs, databases, and storage. Identity teams may own Active Directory, Microsoft Entra ID, MFA, Conditional Access, RBAC, and privileged access.
A security architecture review brings these areas together. Instead of reviewing each layer separately, it asks how the layers interact, where trust boundaries exist, how traffic flows, where logs are collected, and how threats would be detected.
Reviewing the Network Layer
The network layer is often the first place to start because it defines how users, workloads, services, and external systems communicate. An Azure security review should examine virtual networks, subnets, routing, VPN or ExpressRoute connectivity, public IP exposure, DNS, firewall design, and segmentation.
Important controls may include Network Security Groups, Azure Firewall, Azure Application Gateway with WAF, DDoS protection, private endpoints, TLS/SSL requirements, and controlled ingress and egress paths.
The review should answer practical questions. Which services are exposed to the internet? Which traffic is inspected? Are management ports protected? Are private endpoints used where appropriate? Are network rules documented and justified? Is traffic between workloads segmented based on business and security requirements?
BI Cloud Tech can help organizations review this area through architecture review services that evaluate the design, control placement, and operational impact of Azure network security decisions.
Reviewing Infrastructure and Endpoint Security
Infrastructure security includes servers, virtual machines, disks, workstations, Azure Virtual Desktop, update management, administrative access, encryption, and workload hardening.
An architecture review should validate whether administrative access is protected through secure access patterns such as Azure Bastion, least-privilege RBAC, privileged access controls, and controlled remote access. It should also review whether disks are encrypted, secrets are stored securely in Key Vault, antimalware or endpoint controls are in place, and patching responsibilities are clear.
This part of the review should not only focus on whether controls exist. It should confirm whether they are consistently applied across subscriptions, environments, and workload types. A few well-secured virtual machines do not create a secure architecture if other workloads are missing the same baseline controls.
Reviewing Application and Data Security
Applications and data are often where business risk becomes most visible. Web apps, APIs, file servers, databases, storage accounts, and application platforms need clear security requirements.
An Azure security architecture review should examine whether application access is protected, whether WAF controls are required, whether APIs are governed through API Management, whether storage encryption is enabled, whether SAS token usage is controlled, and whether database protections such as Transparent Data Encryption or Dynamic Data Masking are appropriate.
The review should also consider data flow. Where does sensitive data enter the environment? Where is it stored? Which identities can access it? Is access logged? Are public endpoints restricted? Are backup and recovery requirements understood?
Reviewing Identity Security
Identity is one of the most important areas in any cloud security review. If identity controls are weak, attackers may not need to break through the network. They may simply sign in with compromised credentials or excessive permissions.
The review should examine Microsoft Entra ID, Active Directory integration, MFA, Conditional Access, identity protection, privileged identity management, RBAC, password protection, service principals, managed identities, and access review processes.
Strong identity design helps reduce unnecessary access and supports better accountability. BI Cloud Tech’s security and identity expertise can help organizations connect identity controls with the broader Azure security architecture.
Using Azure Policy as a Governance Layer
A security architecture review should also look at governance. It is not enough to define standards manually if the environment has no way to measure or enforce them.
Azure Policy can help audit or enforce expected configurations across the environment. Policies can support requirements for diagnostic settings, allowed regions, tagging, public access restrictions, encryption, private endpoint usage, and approved resource types.
This governance layer helps turn a security baseline into something measurable. It also helps identify drift when workloads change after deployment.
Connecting Logs, Monitoring, Sentinel, and Defender for Cloud
The diagram highlights an important point: security architecture is not complete without visibility. Controls help reduce risk, but monitoring helps organizations understand what is happening when something changes or when suspicious activity occurs.
Log Analytics, Azure Monitor, Microsoft Sentinel, and Microsoft Defender for Cloud should be reviewed together. Log Analytics supports centralized log collection and analysis. Azure Monitor supports metrics, alerts, network monitoring, VM insights, and application insights. Microsoft Sentinel supports data connectors, analytic rules, hunting, incident response, and automation. Microsoft Defender for Cloud supports recommendations, security alerts, and workload protection.
The review should ask whether logs are being collected from the right sources, whether alerts are meaningful, whether incidents have owners, and whether response steps are documented. BI Cloud Tech’s security monitoring and SOC for Azure services can support organizations that need ongoing monitoring and response maturity.
Reviewing Threat Paths and Attack Scenarios
A practical architecture review should include threat thinking. The question is not only “What controls do we have?” It is also “How would an attacker move through this environment?”
Threat paths may include remote administrators, remote employees, external developers, customer users, compromised identities, anonymous attackers, brute force attempts, persistence techniques, exposed endpoints, vulnerable applications, or misconfigured access.
Mapping these scenarios against the architecture helps identify where controls are strong and where gaps exist. For example, an internet-facing application may require WAF protection, private backend access, logging, identity controls, alerting, and incident response procedures. A privileged administrator path may require MFA, Conditional Access, PIM, session monitoring, and break-glass account governance.
What BI Cloud Tech Looks for During an Architecture Review
BI Cloud Tech reviews Azure security architecture from both a design and operations perspective. The review focuses on how security controls are placed, how they are governed, and how they support day-to-day operations.
- Network security: Segmentation, firewalls, routing, DNS, public exposure, private endpoints, and WAF placement.
- Infrastructure security: VM access, encryption, patching, Key Vault usage, endpoint protection, and secure administration.
- Application and data security: Web apps, APIs, storage, databases, encryption, masking, and access patterns.
- Identity security: Entra ID, ADDS, MFA, Conditional Access, RBAC, PIM, and identity protection.
- Governance: Azure Policy, standards, exceptions, ownership, and compliance alignment.
- Monitoring and response: Log Analytics, Azure Monitor, Microsoft Sentinel, Microsoft Defender for Cloud, alerts, hunting, and incident response.
- Threat readiness: Attack paths, attacker personas, tactics, techniques, tools, and response playbooks.
Why This Review Matters
Azure environments change quickly. New workloads are deployed, identities are added, firewall rules are updated, storage accounts are created, and monitoring requirements evolve. Without a regular architecture review, security gaps can develop quietly.
An Azure security architecture review gives organizations a structured way to understand current-state risk, validate design decisions, prioritize remediation, and improve security posture over time.
It also helps leadership and technical teams have a clearer conversation. Instead of only asking whether tools are deployed, the organization can ask better questions: Are controls placed correctly? Are logs useful? Are identities governed? Are threats detectable? Are teams ready to respond?
Recommended Next Step
If your organization uses Azure, an architecture review can help identify whether your network, infrastructure, applications, data, identity, governance, monitoring, and security operations are working together effectively.
BI Cloud Tech can help assess your current Azure security architecture, identify gaps, and provide practical recommendations for improving security posture. To begin, start with a cloud security assessment or request an assessment.