DW is an ambiguous abbreviation. Without more context, it's impossible to determine the specific technology being referred to. It *could* stand for Data Warehouse, which is a central repository of integrated data from one or more disparate sources. Data warehouses are used for reporting and data analysis, and are considered a core component of business intelligence. DW could also refer to Deutsche Welle, a German public international broadcaster. More context is needed for accurate clarification.
Whether you're looking to get your foot in the door, find the right person to talk to, or close the deal — accurate, detailed, trustworthy, and timely information about the organization you're selling to is invaluable.
Use Sumble to: