Architect Framework

In your "Practical Guide" reading this week, the emphasis is on defining an architectural process and approach. In your own words, please describe: 

1. What are some considerations for selecting a specific architectural framework? 

2. Why are quality attributes ("ilities") important when defining an architecture and why isn't it a good idea to  "bolt" these on at a later date?

3. Please provide 2-3 considerations for evaluating an architecture.

Only 1 or 2 paragraphs