RDS is basically a DBM service that is CONSIDERED for relational DATABASES. It is useful for upgrading and patching of data automatically. However, it WORKS for STRUCTURED data only. On the other side, RedShift is used in Data analysis. It is basically a data warehouse service. When it comes to DynamoDB, it is considered when there is a need to deal with unstructured data. RDS is quick as compared to both RedShift and DynamoDB. All of them are POWERFUL enough to perform their tasks without errors.

RDS is basically a DBM service that is considered for relational databases. It is useful for upgrading and patching of data automatically. However, it works for structured data only. On the other side, RedShift is used in Data analysis. It is basically a data warehouse service. When it comes to DynamoDB, it is considered when there is a need to deal with unstructured data. RDS is quick as compared to both RedShift and DynamoDB. All of them are powerful enough to perform their tasks without errors.