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 VPOrder 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 access to the VPC for remote users. It allows developers to access OpenSearch from their local machines. The Client VPN endpoint can be associated with a subnet within the VPC, meeting the requirement for VPC-based access.
A transit gateway with AWS Site-to-Site VPN is designed for site-to-site communication, not individual developer access. It requires an OpenVPN client for developers, but this solution is more appropriate for connecting office locations, not individual developers working remotely.
AWS Direct Connect with a public VIF is designed for high-bandwidth, low-latency connections between on-premises data centers and AWS, not for remote developer access. It would not meet the needs of developers working from home or office locations in this scenario.
A bastion host provides SSH access to instances within a VPC but does not allow direct access to OpenSearch Service. This approach adds unnecessary complexity and does not provide direct, secure access to OpenSearch Service for log analysis.
I surmise that the answer is:
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.