The Coding Accuracy Support System (CASS) enables the United States Postal Service (USPS) to evaluate the accuracy of software that corrects and matches street addresses.
CASS certification is offered to all mailers, service bureaus, and software vendors that would like the USPS to evaluate the quality of their address-matching software and improve the accuracy of their ZIP+4, carrier route, and five-digit coding.
CASS Certified products are listed in USPS literature and on its web site.
A correct address saves the Postal Service time, money and manpower by reducing the volume of: Mailers who use CASS software to check the addresses of their mailing may be able to qualify for discounted postage rates from the USPS.
Here the street and city name misspellings have been corrected (MICROWSOFT → MICROSOFT; REDMUND → REDMOND); street suffix (WAY), ZIP code and ZIP+4 add-on have been added; and, in this case, the address was determined to be the location of a business.