Quadrants

• Techniques - Methods and practices for software development.
• Tools - Software and utilities that aid in development.
• Platforms - Environments and ecosystems for building applications.
• Languages & Frameworks - Programming languages and frameworks used in development.

Rings

• Authority field - Confident teaching/leading/automating with these.
• Good knowledge - Actively use and can troubleshoot in most scenarios.
• Some knowledge - Used in projects, but may need docs or further study.
• No knowledge - Heard of or briefly seen, but not used hands-on.
• No interest - Deliberately not interested in using/learning.