ENGINEERING SPECIFICATION // CHECKLIST · ARCHITECTURE

Technical Due Diligence Checklist

An audit framework for inherited codebases that surfaces scalability limits, licensing liabilities, and single points of failure before you sign or invest.

FormatInteractive Checklist
Reading Time~2 min read
Focus AreaArchitecture
AudienceEngineering Leaders, CTOs, Investors
VerificationField Proven
FIG 1.0 // SYSTEM ARCHITECTURE & TOPOLOGY SPECIFICATION
SPEC: SAZM-CHE-TECHNICAL-DUE-DILI
Technical Due Diligence Checklist — Architectural Reference Specification
TECHNICAL SCHEMATIC:Architectural topology, surface invariants, and evaluation boundaries for Technical Due Diligence Checklist.
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Principal Architect Directive

Core Architectural Invariant
“Identify high-risk architectural bottlenecks and single points of failure.”

Detect open-source licensing liabilities and compliance violations early.

Assess operational processes, disaster recovery readiness, and documentation quality.

Prerequisites & Discovery Inputs

Have the following assets, repositories, and architectural context accessible before executing this evaluation:

  • Access to platform source code repositories
  • Overview of operational infrastructure and costs
  • Third-party library dependency lists

Problem Statement

Acquirers, investors, and engineering leaders often struggle to assess the real quality, scalability, and liability of an inherited codebase. A superficial review can miss hidden technical debt, security issues, or architectural bottlenecks that will restrict future growth. This checklist provides a systematic audit framework to evaluate a platform's technical soundness.

When to Use

Use this checklist during mergers and acquisitions (M&A) processes, when onboarding a new vendor's code, or when performing a major platform audit prior to a strategic business restructure.

Step-by-Step Guide

Step 1: Organizational and License Audit

  • Verify the ownership of all source code, assets, and documentation.
  • Scan codebase dependencies for open-source license compliance (e.g., GPL restrictions vs MIT/Apache permissive licenses).
  • Check that all development pipelines and cloud resources are owned by corporate accounts.

Step 2: Quality and Maintainability Assessment

  • Review structural complexity metrics (e.g., cyclomatic complexity, component coupling, module size).
  • Assess test suite coverage, runtimes, and build pass rates.
  • Evaluate documentation depth (e.g., READMEs, setup guides, API specs).

Step 3: Infrastructure and Operational Scale

  • Audit current cloud hosting architectures, network topologies, and single-point-of-failure (SPOF) risks.
  • Review historical uptime records, incident history, and disaster recovery processes.
  • Check scalability bounds (e.g., database read/write bottlenecks, caching hit ratios).

Checklist Items

  • Repository has complete open-source license compliance reports with no licensing violations.
  • Platform architecture documentation is up to date, covering all major modules and API integrations.
  • No single person holds exclusive knowledge of the system (bus factor is mitigated).
  • Critical infrastructure configurations are stored as Code (IaC) rather than configured manually.
  • Active staging environment matches production configuration and data shape.
  • Database backups are automated, encrypted, and regularly tested for restoration speed.
  • Test coverage meets corporate standards with automated regression suites running in CI/CD.
  • Codebase compiles on local developer systems in under 30 minutes with standardized onboarding.

Frequently Asked Questions

Practical insights on architecture execution

What is the primary objective of technical due diligence?

To evaluate structural risks, technical debt, licensing liabilities, and scaling limits of a software platform prior to investment or strategic acquisition.

FROM SPECIFICATION TO RUNNING CODE

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