More specifically: Cafe

Think about using a data warehouse in your business. In regards to the architecture, would you be more likely to use three-tier, two-tier, or a one-tier architecture? Write a paragraph explaining your reasoning.

Which data warehouse design will work better for your business: Enterprise-Wide (EDW) or DM? Write a paragraph explaining your reasoning.

Are you more likely to buy and maintain your own data warehouse system, or use a hosted data warehouse? Explain you reasoning, including potential pros and cons of your decision.