AWS Step Function :
AWS Batch :
AWS Athena : SQL on S3, An interactive query on S3, Use Case : Adhoc queries in DWH/Bigdata
AWS Glue : ETL
AWS Polly : Text to Speech
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AWS EMR - Bigdata with Hadoop, Hive, Sresto, Spark, Hbase, Impala
AWS RDS - Oracle,SQL Server,PostgreSQL,MySQL,Aurora
AWS Redis - InMemory
AWS RedShift - Columan Database, Relational Database, Best with BI tools like tablue/etc,
AWS DynamoDB - NoSQL
AWS QuickSight - BI/DAshboard
AWS Kinesis - Realtime/Stream Prcoessing, more then MQ, AWS Kinesis Firehose - allows messages into single/bundle file AWS Kinesis Analytics - allow SQL queries to to run on data in the stream as it arrives