AWS Website Staging Environment Setup

I need a fully-functioning staging environment for my website built inside AWS. The goal is to let me test new features safely before they ever reach production, so the staging copy must mirror the live site in look, performance, and basic integrations.

Here’s what I expect:
• A separate AWS account or clearly isolated VPC that will not interfere with production resources.
• Clean deployment of the site’s codebase and assets to that new environment. I’m open to EC2, S3, a managed database, or any combination you recommend, as long as the final result matches the live site’s behaviour.
• Best-practice security (private key access, least-privilege IAM roles, HTTPS).
• A straightforward way for me to push updates to staging—Git-based or any other repeatable method you suggest.
• Written instructions (or a small walkthrough call) so I can reproduce the process in the future.

If additional AWS services such as RDS, CloudFront, or Route 53 will make the setup smoother, please outline that in your proposal. I’m happy to follow your lead on the exact architecture as long as it remains cost-conscious and easy to maintain.