Spark EPC - Enterprise Network Architecture Review (ENAR)

Spark's Professional Services team delivers a strategic Enterprise Network Architecture Review that provides actionable insights, a future-state blueprint, and a structured transformation roadmap. This engagement is designed for organisations seeking clarity before committing to network, security, or cloud investments.

The ENAR engagement produces four key deliverables through a structured series of workshops and stakeholder interviews:

• Current-State Architecture Documentation - A fully documented analysis of your existing network environment, including identified risks, constraints, and operational issues. This serves as a foundational reference for building business cases and informing procurement strategies.

• Target-State Architecture Blueprint - A collaboratively developed conceptual architecture aligned with Secure Access Service Edge (SASE) and Zero Trust frameworks. This blueprint commonly addresses environments involving AWS Transit Gateway, AWS Network Firewall, AWS CloudWAN, and SASE platforms such as Zscaler or Palo Alto Prisma Access, providing a strategic direction regardless of your current vendor mix.

• Prioritised Strategic Recommendations - A documented set of recommendations that resolve current operational issues while supporting planned business initiatives and organisational priorities.

• Phased Zero Trust Roadmap - A sequenced, prioritised roadmap for transitioning across network domains toward Zero Trust, with clear initiative ordering and actionable next steps.

The review begins with a detailed assessment of your current network architecture, supported by structured workshops and stakeholder interviews to capture business objectives, requirements, and constraints. Spark then develops the target-state architecture and roadmap collaboratively with your team, ensuring alignment with your strategic goals.

This engagement is strategic and technology-agnostic in nature. It does not cover detailed low-level architecture designs or implementation services, allowing you to take recommendations to any vendor or delivery partner.

Planned Investments Without Clear Alignment Organisations preparing to invest in cloud adoption, network security, or infrastructure upgrades often lack alignment with an overarching strategy. The ENAR provides the coherent framework needed to maximise investment value and avoid fragmented initiatives.

Complex Multi-Vendor Support Models Enterprises managing networks across multiple vendors and service providers face operational inefficiencies, unpredictable costs, and inconsistent service delivery. A unified network strategy enables optimised contracts, streamlined operations, and reduced risk.

Mergers, Acquisitions, or Divestments Structural business changes bring integration complexities, data sensitivities, and security concerns that require immediate architectural attention. The ENAR ensures transitions are seamless and the network is prepared for the next phase of business evolution.

Spark brings carrier-grade network expertise and deep experience operating enterprise-scale infrastructure across New Zealand and the APAC region. As a technology-agnostic advisor, Spark provides independent recommendations free from vendor bias, ensuring your strategy serves your business objectives rather than any single platform. The engagement methodology combines structured workshops with hands-on architectural expertise to deliver outcomes that are both strategically sound and practically executable.

While the review remains vendor-neutral, Spark's team commonly assesses and provides recommendations relevant to AWS networking services including AWS Transit Gateway, AWS Network Firewall, and AWS CloudWAN. The target-state architecture considers how cloud-native networking integrates with on-premises infrastructure and SASE overlays to deliver a cohesive hybrid network strategy.