With traditional software programs, users must download and install the programs onto their computers in order to use them. Inevitably, more time and money have to be spent on maintaining and updating that software, which is only available on that one computer anyway.
On the other hand, when software or services are web-based there is nothing to download, install, maintain, or update. Web-based services and software work anywhere, on any computer you're using. Web-based programs are as easy to use as opening your web browser and going to a website.
Alternative address verification services require customers to download, install, and update software. SmartyStreets requires only your web browser. You can use it anywhere, anytime. There's no updating or maintaining for you to do. Your costs (and our costs) are lower, and that's the way it should be.