Network Architecture Design & Review is a structured assessment and planning service that evaluates an organization’s network topology to ensure it is secure, resilient, scalable, and aligned with business and security objectives. The service covers both new network designs and reviews of existing network environments across on-premises, cloud, hybrid, and multi-site infrastructures. The review analyzes network segmentation, trust boundaries, access paths, routing, firewall placement, remote access design, and interconnections between users, applications, and data. It identifies architectural weaknesses such as flat networks, excessive trust, insecure inter-zone communication, single points of failure, and poor visibility. For new designs, the service provides security-by-design network architectures, incorporating principles like least privilege, defense-in-depth, zero trust networking, secure remote access, and high availability. For existing environments, the service validates whether the current architecture can withstand modern attack techniques, lateral movement, insider threats, and advanced persistent threats. The assessment is aligned with NIST network security principles, CERT-In guidelines, CIS architecture best practices, Zero Trust models, and regulatory expectations, ensuring both operational efficiency and security assurance.