Building search experience using Kendra for a data source where new data is added in an ongoing basis

You can keep your index up to date by setting up periodic synchronizations between your data source and index. You can choose to update an index manually using the console or the StartDataSourceSyncJob API. Otherwise, you set up a schedule to update an index and have it synchronize with your data source. Refer Amazon Kendra documentation : https://docs.aws.amazon.com/kendra/latest/dg/data-source.html.

For event driven synchronization, publish the triggering event to Amazon EventBridge for invoking StartDataSourceSyncJob API.