To determine the public and private IP addresses of the Amazon EC2 instance it is running on, software can query the local instance metadata. The instance metadata service provides a set of data about an EC2 instance that can be accessed from within the instance itself. The metadata can be retrieved by making a simple HTTP request to a specific URL.
To retrieve the IP addresses, the software can make a request to the following URLs:
To get the public IP address: http://169.254.169.254/latest/meta-data/public-ipv4
To get the private IP address: http://169.254.169.254/latest/meta-data/local-ipv4
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