Mashups -- or composite applications -- promise the ability to easily create useful new applications from existing services and Web applications. By combining data from multiple sources across the Web, and from within the enterprise, mashups can help distill important information for people who would otherwise need to gather and distill it manually. A mortgage underwriter verifying an applicant's income is a good example. Underwriters typically work with a long list of Web pages, accessing public data sources to create a montage of the applicant's financial situation. This is a perfect scenario for a mashup.
