For a long time, accountants settled for a limited range of products that they used successfully year after year in their firms. But the explosion of online bandwidth, coupled with the emergence of powerful cloud technology for public accounting firms, is radically redefining the way CPAs provide their services. A CPA firm can provide services to clients in several states, using scanned images of their source documents. The result is low-cost, efficient, productive and profitable. Leave it to the cloud providers to deal with the hardware.