Informatica is looking to make the lives of developers simpler on two fundamental planes of existence. The first is allowing developers to leverage Informatica APIs to create their own connectors. The second involves making it easier to collaborate with business users in terms of figuring out what data sources actually need to be integrated.
When a browser visits a Web site, the page that's sent back over the Internet is preceded by a pre-amble known as the HTTP header. As it turns out, the same sort of pre-amble precedes a Web API's response. As this 101-level tutorial, shows, it includes a hint about how the API formats its data.