A solutions architect is designing an AWS account structure for a company that consists of multiple teams. All the teams will work in the same AWS Region. The company needs a VPC that is connected…

AWS Client VPN is designed to securely connect individual client devices to AWS VPCs, not to establish a site-to-site connection between an entire on-premises network and a VPC.

Creating an AWS CloudFormation template that provisions the VPC and required subnets is a foundational and cost-effective best practice for consistent, repeatable, and scalable infrastructure deployment in AWS.

While AWS Site-to-Site VPN is correct for connectivity, using AWS Transit Gateway in conjunction is generally overkill and less cost-effective for connecting a single VPC to an on-premises network, as Transit Gateway is designed for managing connections between many VPCs and on-premises networks.

For connecting a VPC to an on-premises network with expected total traffic less than 50 Mbps and prioritizing cost-effectiveness, an AWS Site-to-Site VPN provides a secure and reliable encrypted connection over the internet, which is typically more economical than AWS Direct Connect.

AWS Direct Connect provides dedicated, high-bandwidth network connections, which would be significantly more expensive and generally unnecessary for a requirement of less than 50 Mbps of total traffic and a focus on cost-effectiveness.