How long did it take from final onsite interview to receive offer?

Understand the needs of the customer, the technology they are using today, and why. Provide an overview and demonstration of the new software's capabilities. Explain the benefits and value the new software offers. Understand and address any issues with missing features/capabilities and with the level of effort required to migrate existing processes. If all else fails, explain it is the company standard to use the new software and they must comply.