# 1. Introduction

This document outlines the overall project architecture for **Teams Phone CLI**, including backend systems, shared services, and non-UI specific concerns. Its primary goal is to serve as the guiding architectural blueprint for AI-driven development, ensuring consistency and adherence to chosen patterns and technologies.

**Relationship to Frontend Architecture:**
This is a CLI-only project with no graphical user interface. No separate Frontend Architecture Document is needed.

### 1.1 Starter Template or Existing Project

**Starter Template:** N/A - This is a greenfield Python CLI project.

The project will be built from scratch using standard Python project conventions. No starter template or boilerplate is being used. The tech stack (Python 3.10+, Typer, httpx, MSAL) is well-documented and doesn't require a starter template for rapid setup.

### 1.2 Change Log

| Date | Version | Description | Author |
|------|---------|-------------|--------|
| 2026-01-28 | 1.0 | Initial architecture document | Architect Agent |

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