Which solution will meet these requirements?

Explanations:

Amazon Athena is a serverless interactive query service, but it does not support direct enrichment of S3 data using Amazon Redshift data. While it can process S3 data, using AWS Glue to enrich data in Amazon Redshift is not directly possible in a streamlined manner without additional steps.

Amazon EMR (Elastic MapReduce) is a big data processing service that can process large amounts of data in parallel. It can easily access both the semi-structured data in S3 and the structured data in Amazon Redshift, allowing for efficient enrichment of S3 data. This option meets the requirements for parallel processing and data enrichment effectively.

While Amazon EMR can process data from S3, using Amazon Kinesis Data Streams to move S3 data into Amazon Redshift for enrichment introduces unnecessary complexity. Kinesis is typically used for real-time data streaming rather than batch processing, making this option less suitable for the use case described.

AWS Glue is primarily an ETL (extract, transform, load) service and is not optimized for processing large datasets in parallel like EMR. Although AWS Lake Formation can manage data lakes and integrate with Redshift, this option does not directly address the requirement for fast parallel processing of semi-structured data in S3.