Consulting Architecture Playbook

A living reference repository of architecture decision records (ADRs), system design case studies, and reusable delivery templates.

This repository serves two purposes:

A structured lookup system for future consulting, architecture, and delivery work
A transparent demonstration of consulting-grade technical thinking

It is designed to support disciplined, pragmatic system design across SaaS, enterprise modernization, distributed systems, and AI-enabled platforms.

Why This Repository Exists

In consulting and technical leadership roles, speed and clarity matter.

Rather than reinventing patterns for every engagement, this repository provides:

Reusable architectural reasoning
Documented trade-offs
Structured design templates
Failure-mode thinking
Security-aware design principles
Scaling and evolution strategies

It acts as both:

A personal architecture knowledge base
A reusable toolkit for client-facing delivery

Repository Structure

1. Architecture Decision Records (ADRs)

Documented architectural decisions including:

Managed platform vs Kubernetes
Document database vs relational database
Tenant isolation strategies
Modular monolith vs microservices

Each ADR includes:

Context and constraints
Decision drivers
Alternatives considered
Security implications
Trade-offs and consequences
Revisit criteria

These are reference decisions that can be adapted to new engagements.

2. System Design Case Studies

Anonymized real-world examples demonstrating:

Multi-tenant SaaS architecture
AI-enabled RAG system design
Distributed synchronization reliability engineering
Offline-first mobile system design

Each case study follows a consistent structure:

Business context and constraints
Architecture overview
Data modeling strategy
Failure modes and mitigations
Security and operational considerations
Scaling and future evolution

These are not marketing artifacts — they are architectural narratives.

3. Consulting Templates

Reusable structured documentation for:

Architecture Decision Records
Technical Design Documents
Discovery Workshops

These templates are intended for active use in future projects and engagements.

Architectural Philosophy

This repository reflects a practical design philosophy:

Prefer clarity over complexity
Make trade-offs explicit
Embed security into design decisions
Start simple, scale deliberately
Document decisions that matter
Treat failure modes as first-class concerns

The objective is sustainable, production-grade systems — not novelty.

How to Use This Repository

As a lookup system:

Use ADRs to evaluate infrastructure and platform decisions
Use case studies to guide similar architectural scenarios
Use templates to accelerate structured documentation
Adapt patterns, don’t copy blindly

As a portfolio:

Review architectural reasoning
Assess decision rigor
Evaluate trade-off discipline

Author

Consulting Tech Lead specializing in scalable SaaS systems, Azure cloud architecture, distributed reliability, and pragmatic system design.

This repository evolves alongside future consulting and engineering work.

MarcKarbowiak/consulting-architecture-playbook