I'm for an experience driven answer from a few software engineers who have implemented a rules engine in their internal business applications.

How has it affected your business in the following ways:

• Ability to launch and iterate over business driven logic
• Ability to have "business users" perform the actual modification of those rules rather than developers.
• Ability to comprehend the business rules in general.
• Quality of the software releases. More or less bugs from the end-user's POV?
• Speed of the applications.

If you had to do it all over again, what would you do differently?

Lastly, I'm looking for a qualification of your answer w/ respect to the architecture. Would you do the same thing if you were deploying to a 1-machine setup vs. your architecture vs. a multi-tier cloud-based distributed architecture using 1000s of machines? How would it be different?

Thanks!