CloudSearch is a managed service in the AWS
Cloud that makes it simple and scale a search solution for your website or application.
Benefits:
Amazon CloudSearch, you can quickly add rich search capabilities to your website or application. You don't need to become a search expert or worry about hardware provisioning, setup, and maintenance.
Rich Search Features
Amazon CloudSearch supports powerful search features such as:

• Free text, Boolean, and Faceted search
• Autocomplete suggestions
• Customizable relevance ranking and query-time rank expressions
• Field weighting
• Geospatial search
• Highlighting