# Solution Design

The Solution Design phase transforms client requirements into a technical implementation plan. During this stage, the reseller defines the overall system architecture, identifies required technologies, prepares data sources, and documents the implementation approach.

The objective is to create a scalable, secure, and maintainable AI solution aligned with THiNK implementation standards.

## Design Activities

The reseller should:

- Analyze business requirements.
- Define system architecture.
- Identify required integrations.
- Determine AI models to be used.
- Select appropriate data sources.
- Design conversation flows.
- Plan user interactions.
- Develop API specifications.

## Architecture Components

Typical THiNK AI solutions include:

- User Interface
- FastAPI Backend
- Retrieval-Augmented Generation (RAG)
- LlamaIndex
- ChromaDB
- Large Language Models
- External APIs
- PostgreSQL or MongoDB
- Monitoring and Logging

## Design Documentation

The solution design document should include:

- Architecture diagram
- Functional specifications
- Data flow
- Security considerations
- Deployment plan
- Risk assessment

Design approval should be obtained before development begins.