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A retail company has hired you as an AWS Certified Solutions Architect Professional to provide consultancy for managing a serverless application that consists of multiple API gateways, Lambda functions, S3 buckets and DynamoDB tables. The company is getting reports from customers that some of the application components seem to be lagging while loading dynamic images and some are timing out with the "504 Gateway Timeout" error. As part of your investigations to identify the root cause behind this issue, you can confirm that DynamoDB monitoring metrics are at acceptable levels. Which of the following steps would you recommend to address these application issues? (Select two)