Clojure Katas - Designing Data-Driven DSLs - Rafal Dittwald & James Cash

In recent years, there’s been a wave of new Clojure libraries written with “data driven” APIs. Be it routing, database-querying, or composing systems - problems that were once solved with string-, function- or macro-based DSLs are now being re-solved in a new “style” that’s somewhat unique to Clojure. What does it mean to be "data driven"? Is it just a fad? Is it only for libraries?