For processing high-throughput data streams with immediate analytics capabilities, Amazon Kinesis is the best-suited service. Kinesis provides the necessary tools for real-time data ingestion and analysis, making it ideal for use cases like processing stock market feeds where speed and scalability are critical. Amazon SQS, while capable of message queuing, is not optimized for real-time data streaming analytics. Amazon S3 is intended for durable storage and is not suited for real-time stream processing. AWS Lambda is an event-driven, serverless computing platform that can process data streams but is not itself a data ingestion service and would require integration with a streaming service to fully address the scenario.