How does Secure Payment Gateway verify all transactions?

by: Caroline Blair<br /><br /><br /><br />A merchant once asked &quot;How does Secure Payment Gateway verify all transactions?&quot;. Through the use of the Address Verification System or the AVS. This system works within the US territory only because currently this system is unavailable outside the US. <br /><br />The AVS system is the one that checks the billing address given by the customer <br />that would directly match the one in the credit card. <br /><br />However, if you choose not to avail of the AVS, Visa &amp; Mastercard will be unable to support such transactions plus charging you with an additional .17% to 1.25% on those sales. But the catch is, if you are able to avail of a merchant account, it will usually come with an AVS at no extra charge but if there is such a charge it is usually combined with a transaction fee. <br /><br />Basically, the answer to the question &quot;How does Secure Payment Gateway verify all transactions?&quot; with the use of an AVS software that helps merchants authenticate all credit card transactions. <br /><br /><br /><br /><div align="justify">(Caroline Blair, a native from Boston, has effectively lectured on the &ldquo;Importance of Secure Payment Gateways to today&#39;s web wondering Entrepreneur&rdquo;and has deemed a significant amount of praise for her contribution to Cambridge Business Students by raising the bar in terms of Risk Management Modules and eCommerce importance)<br /></div>