The story fits e-discovery because so many people confidently talk about e-discovery as if it were one thing: the Federal Rules of Civil Procedure amendments, or court rulings, or review and analysis, or email searches. All of these things are involved in e-discovery, but e-discovery is much larger than the sum of these parts and many more.
Here is our definition of e-discovery: "E-discovery is the process of classifying, collecting, preserving, reviewing, and producing electronically stored information (ESI)." This definition references e-discovery's major pain point: litigation. But this e-discovery definition is not limited to litigation. That is because the same point points -- and the same solutions -- benefit not only the litigation e-discovery process, but also compliance and even storage management. Essentially, e-discovery tools and best practices impact any business process that depends on visibility and control over ESI.
The most-affected workgroups here are Legal (i.e. the General Counsel's office); the governance, risk, and compliance folks (GRC); and IT, which must manage all of that data that legal and GRC are desperately trying to search.
E-discovery and Legal: This is the classic use of e-discovery tools and its biggest development driver. Legal has used review and analysis software for years, but these packages are developing analytics to reach further back in the e-discovery cycle. The earlier that review and analysis can produce workable results sets, the more cost-effective litigation e-discovery becomes.