Enterprise Architecture

Framework Overview

The Aevum Zenth Enterprise Architecture (EA) Framework provides a unified blueprint for aligning business strategy with technology execution across 400 subsidiaries and 47 industries. Designed for scale, resilience, and cross-divisional interoperability, the framework enforces standardization while enabling domain-specific innovation.

Our EA practice follows a hierarchical yet federated model: global standards are defined at the corporate level, while divisional architecture boards retain autonomy to adapt implementations to regulatory, operational, and technical constraints within their verticals.

Architecture Layers

The framework is structured around four interconnected layers, each governed by specific domain experts and aligned to business outcomes.

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Business Architecture

Maps organizational structure, capabilities, value streams, and processes. Defines cross-divisional service catalogs and capability matrices.

Capabilities Value Streams Org Design

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Data Architecture

Governs data models, master data management, data lakes, semantic layers, and cross-subsidiary data exchange protocols.

Data Mesh MDM Governance

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Application Architecture

Defines application portfolios, microservices boundaries, API contracts, SaaS integration patterns, and lifecycle management.

Microservices API-First Event-Driven

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Technology Architecture

Covers infrastructure, cloud strategy, networking, compute/storage tiers, edge deployments, and hardware standardization.

Multi-Cloud Edge Zero Trust

Core Architecture Principles

All architectural decisions must adhere to the following ratified principles. Violations require Architecture Review Board (ARB) exemption.

Principle	Description	Enforcement	Status
AP-01: Interoperability First	Systems must expose standardized interfaces and support open protocols to enable cross-divisional data flow.	ARB Review	Active
AP-02: Security by Design	Encryption, identity verification, and least-privilege access must be implemented at inception, not retrofitted.	Automated Policy	Active
AP-03: Data Sovereignty & Residency	Data localization and compliance routing must respect regional regulations (GDPR, CCPA, DPA, etc.).	Geo-Policy Engine	Active
AP-04: Legacy Modernization Path	Legacy systems must follow a documented strangler-fig migration pattern within 36 months of assessment.	Quarterly Audit	Pending Rollout
AP-05: Vendor Agnosticism	Architectures must avoid single-vendor lock-in through abstraction layers and portable deployment descriptors.	Contract Review	Active
AP-06: Observability Mandate	All services must emit structured logs, metrics, and traces compatible with the central observability stack.	CI/CD Gate	Active

Integration & Interoperability Strategy

Aevum Zenth operates a hybrid integration topology combining enterprise service buses, event streaming platforms, and API gateways to connect 400+ subsidiaries.

                    // Integration Topology Configuration

                    {
                      "integration_pattern": "event-driven + request-response",
                      "api_gateway": "Aevum API Mesh (Kong + Envoy)",
                      "message_bus": "Kafka Cluster (Regional)",
                      "service_discovery": "Consul + gRPC",
                      "contract_enforcement": "OpenAPI 3.1 + AsyncAPI"
                    }
                

Key Integration Standards:

REST/JSON for synchronous APIs with rate limiting and mTLS
Avro/Protobuf schemas registered in central Schema Registry
Async event mesh for real-time data propagation across divisions
GraphQL federation for cross-subsidiary data aggregation

Standards & Compliance

All architectural implementations must align with recognized industry frameworks and internal compliance mandates.

TOGAF 9.2

Enterprise Architecture

ISO/IEC 27001

Information Security

NIST CSF 2.0

Cybersecurity Framework

SOC 2 Type II

Service Organization Controls

GDPR / CCPA

Data Privacy

IEEE 1471

Architecture Description

EA Tools & Platforms

The Architecture Office utilizes a centralized toolchain for modeling, governance, and lifecycle management.

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Modeling & Repositories

LeanIX, Archi, and Enterprise Architect for business capability mapping, application portfolios, and technology roadmaps.

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CMDB & Discovery

ServiceNow ITOM + custom asset scanners for automated infrastructure discovery, dependency mapping, and license tracking.

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Policy & Governance

OPA (Open Policy Agent) integrated with GitOps pipelines for automated architecture compliance checks and exemption tracking.

Architecture Council & Governance

The Enterprise Architecture Council comprises divisional CTOs, domain architects, and compliance officers. It meets bi-weekly to review strategic initiatives, approve exceptions, and update architectural standards.

Escalation Path: Team Architect → Divisional EA Lead → Corporate Architecture Office → Architecture Review Board (ARB)

                    // ARB Submission Requirements

                    - Architecture Decision Record (ADR)

                    - Impact Assessment (Business, Data, App, Tech)

                    - Security & Privacy Review

                    - Cost & TCO Analysis

                    - Rollback & Contingency Plan