Which service will automatically distribute incoming application traffic?

Amazon Elastic Load Balancing is the service that automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, or IP addresses. This distribution helps ensure high availability, reliability, and fault tolerance for applications. By balancing the load, it optimizes resource use and helps maintain application performance under varying levels of incoming traffic.

Using Elastic Load Balancing, you can automatically adjust to incoming traffic patterns and enhance the user experience by ensuring that no single resource gets overwhelmed. Additionally, it offers features such as health checks to monitor the status of application resources and can route traffic only to healthy instances, further improving the overall reliability of the application.

AWS Direct Connect is a service designed for establishing a dedicated network connection from your premises to AWS, which does not focus on traffic distribution. Amazon Route 53 is primarily a scalable Domain Name System (DNS) web service that routes end users to internet applications by translating domain names into IP addresses, while also offering health checks and traffic management features. However, it is not synonymous with distributing application traffic like Elastic Load Balancing does.

Amazon EC2 is the core virtual server offering but does not provide automatic distribution of incoming traffic without the aid of Elastic Load Balancing.