AWS Certified Advanced Networking – Specialty (ANS-C01)Network DesignMedium
A global software company needs to provide private and secure access to its SaaS application, hosted in multiple AWS VPCs across different accounts, for its enterprise customers. Each customer requires dedicated private access without traversing the public internet, and the solution must simplify network management for both the SaaS provider and the customers. Which AWS service should the company use?
- AAWS PrivateLink for each customer to access the SaaS service.
- BSite-to-Site VPN connections from each customer to the SaaS VPC.
- CInternet Gateways in SaaS VPCs with strict security group rules.
- DVPC Peering between each customer VPC and SaaS VPC.
Show answer & explanationAnswer & explanation
Correct answer: A. AWS PrivateLink for each customer to access the SaaS service.
AWS PrivateLink enables private connectivity between VPCs, services, and on-premises applications securely on the Amazon network. It simplifies network architecture by eliminating the need for VPC peering, VPNs, or exposing services to the public internet, making it ideal for SaaS providers offering dedicated private access to many customers.
Why the other options are wrong
- B. Site-to-Site VPNs are for on-premises to AWS connectivity or for a limited number of VPCs; managing individual VPNs for each customer is not scalable for SaaS.
- C. Internet Gateways expose the service to the public internet, which violates the requirement for private and secure access without traversing the public internet.
- D. VPC Peering is complex to manage at scale for many customers and creates a mesh network, which is not suitable for a multi-tenant SaaS model.
AWS PrivateLink for SaaS
Enables private connectivity between your VPC, services, and on-premises applications over the Amazon network.
- Provides private access to services without exposing them to the internet.
- Simplifies network management for multi-tenant SaaS.
- Eliminates the need for VPC peering or VPNs for service access.
Memory trick: PrivateLink is the secure, exclusive link for SaaS customers.