What type of access does Private Google Access provide for on-premises hosts?

Private Google Access allows on-premises hosts within a Virtual Private Cloud (VPC) network to connect to Google APIs and services without needing to have external IP addresses assigned. This is particularly advantageous for security and compliance, as it enables private connectivity and reduces exposure to the public internet.

When on-premises hosts need to interact with Google services such as Cloud Storage, BigQuery, or other APIs, Private Google Access ensures that the communication can occur internally within the Google Cloud infrastructure over the private network. This means that sensitive data does not have to traverse the public internet, thus minimizing the potential attack surface and enhancing security.

The other options do not accurately capture the specific functionality of Private Google Access. For instance, access to all Google services without restrictions would imply broader permissions that are not aligned with the defined scope of Private Google Access, which focuses specifically on API access through private means. Similarly, suggesting access only to public IP addresses contradicts the fundamental purpose of Private Google Access, which is to facilitate private access not reliant on external IPs. Access via application programming interfaces is a broad statement that does not specify the conditions under which this access is provided, such as the need for internal networking capabilities that Private Google Access fulfills.