the speed of the type-ahead suggestions is a key positive for this solution as opposed to others that merely validate what is typed or suggest alternates in lieu of what was typed.
We have seen an increase in the quality of data we are getting at checkout and an overall faster flow through the checkout flow as well. We believe this has had a positive increase in conversion rate as well as customer satisfaction.
In addition we have tied this in with Braintree and now get better hit rates on exact match for billing zip codes which we use for fraud controls.
Customer service/support has been a key benefit as well when a couple of questions have come up we always get good answers relatively quickly.
Decrease fraud mismatch rates for Billing Zip Codes
Increase data quality of Customer data during checkout