A three-tier web application is composed of a aws video

October 01, 2025  ·  PT1H46M27S  ·  EN

solutions-architect video for a three-tier web application is composed of a front end hosted on an Amazon EC2 instance in public subnet, application middleware

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A three-tier web application is composed of a front end hosted on an Amazon EC2 instance in public subnet, application middleware hosted on EC2 in a private subnet and a database hosted on an Amazon RDS MySQL database in a private subnet. The database layer should be restricted to only allow incoming connections from the application. Which of the following options makes sure that database can only be accessed by the application layer?