An emerging fintech startup requires a database solution for processing and storing large volumes of financial transaction records. Transactions must be quickly retrievable based on the transaction ID, and new records are ingested at a high velocity throughout the day. Consistency is important immediately after transaction write. The startup is looking to minimize costs while ensuring the database can scale to meet growing demand. Which AWS database service should the startup utilize?
Amazon DynamoDB with on-demand capacity
Amazon RDS with Provisioned IOPS
Amazon Neptune
Amazon DocumentDB