AWS PrivateLink
AWS PrivateLink is a networking service that enables private connectivity between virtual private clouds (VPCs), AWS services, and on-premises applications without exposing traffic to the public internet. It uses VPC endpoints to create private connections, ensuring data remains within the AWS network for enhanced security and reduced latency. This service is commonly used to access services like Amazon S3, DynamoDB, or third-party SaaS applications privately.
Developers should use AWS PrivateLink when building secure, hybrid architectures that require private access to AWS services or SaaS applications without internet exposure, such as in compliance-heavy industries like finance or healthcare. It's ideal for scenarios where data privacy, network isolation, and reduced attack surface are critical, like connecting VPCs across accounts or regions securely. Use it to avoid public IPs, simplify network management, and meet regulatory requirements like GDPR or HIPAA.