As an AWS Certified Developer Associate, you are tasked with creating an AWS Elastic Beanstalk environment to manage the deployment of a high-traffic, high-availability application. Your goal is to deploy a new version of the application using Elastic Beanstalk while ensuring that both performance and availability remain unaffected. Additionally, you need to maintain cost-effectiveness throughout the process.

What is the MOST optimal way to achieve this deployment while keeping costs in check?