Which solution will meet these requirements?
Configure and set up an AWS Client VPN endpoint. Associate the Client VPN endpoint with a subnet in the VPC. Configure a Client VPN self-service portal. Instruct the developers to connect by using the client for Client VPN.
Create a transit gateway, and connect it to the VPC. Create an AWS Site-to-Site VPN. Create an attachment to the transit gateway. Instruct the developers to connect by using an OpenVPN client.
Create a transit gateway, and connect it to the VPC. Order an AWS Direct Connect connection. Set up a public VIF on the Direct Connect connection. Associate the public VIF with the transit gateway. Instruct the developers to connect to the Direct Connect connection
Create and configure a bastion host in a public subnet of the VPC. Configure the bastion host security group to allow SSH access from the company CIDR ranges. Instruct the developers to connect by using SSH.
Explanations:
AWS Client VPN provides secure connectivity to the VPC, allowing developers to connect from home and office locations. This solution ensures access to the Amazon ES cluster securely through the VPC and uses an easy-to-configure client for remote access.
A Site-to-Site VPN is typically used to connect on-premises networks to AWS VPCs, not individual developers. OpenVPN clients do not integrate with Site-to-Site VPN setups directly for this use case.
AWS Direct Connect is used for establishing dedicated network connections between on-premises data centers and AWS, typically for high-bandwidth or low-latency needs. It is not practical for individual developers to use for accessing Amazon ES from remote locations.
A bastion host allows SSH access to instances within the VPC, but it does not directly solve the problem of allowing developers to access Amazon ES from remote locations. This method would not be as straightforward or secure as using Client VPN for logging and analysis tasks.