Hierarchy of main cost drivers:
    - Human review. It's costly.    
        - When it involves lawyers and law firm staff
         - Moreso when review presupposes bi-lingual assets,  themselves quite rare and valuable.
     
         - Data Management    
        - Identification of data & repositories
         - Collation of data        
            - Document library & search index construction
         
                 - Data access policy development and provisioning 
         - Implementing a document sharing platform
     
     
Trends & Drivers
Though not a one-size-fits-all panacea, the advances in machine learning and language translation have the potential to dramatically reconfigure the cost drivers of the industry