Components and Architecture 
SAP NetWeaver Enterprise Search: Technical Structure
SAP NetWeaver Enterprise Search comprises the following components:
SAP NetWeaver Application Server ABAP (AS ABAP)
AS ABAP from SAP NetWeaver Enterprise Search performs the following tasks:
Providing the administration and modeling tools as well as the user interface for the search
Extracting data from connected search providers for the BWA
Compiling the search results and preparing them for the search UI
SAP NetWeaver Business Warehouse Accelerator (BWA)
BWA, when used as a search machine for SAP NetWeaver Enterprise Search, performs the following tasks:
Indexing the data provided by the search data providers
Providing the cruiser component for activating the file search on file and Web servers
Providing the search results for AS ABAP
The following figure shows the SAP NetWeaver Enterprise Search components, connected search providers, and UIs.
Shipment and Implementation
The BWA is preinstalled by our hardware partners on a blade system and shipped as a finished appliance. AS ABAP is shipped in the standard way by SAP as an installable software package .
The implementation procedure is as follows: The customer gets BWA from the hardware partner, installs AS ABAP, connects the two components, and starts the automatic configuration. SAP NetWeaver Enterprise Search is then functional and can be connected to search providers, central user management, and so on.