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AWS Certified Solutions Architect - Associate · AWS
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DynamoDB with its HA and built-in scalability. The nature of the table also resonates with NoSQL than SQL DB such as Oracle. Only 1 table so migration is just a script from Oracle to DynamoDB D is workable but more expensive with Oracle licenses and other setups for HA and scalability
HA & built-in scalability of Amazon DynamoDB : https://aws.amazon.com/dynamodb/features/#:~:text=Amazon%20DynamoDB%20is%20a%20fully,for%20the%20most%20demanding%20applications.
A puts images in Oracle, not a good idea C DAX is not going to help with images D It is doable but RDS on multi AZ does not give you more performance or write scalability. It gives more availability and read scalability which is not required here. B works as Geographic code is the key in DynamoDB and S3 image URL is the data so DynamoDB can handle tens of thousands such record and S3 can scale for writing