Enterprise search software is very important in larger law firms and in-house departments. Most in-house departments and law firms need support implementing enterprise search engines. Implementation varies depending on the needs of an organization, including the number of systems to be indexed, mapping of taxonomy terms, definition of required results, configuration of tabs and filters, API integration with various systems, and change management efforts to support adoption. Fireman and & Company and HBR are the main consulting firms addressing enterprise search implementation.