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A company is developing an on-demand video application based on microservices, which is expected to have 5 million users initially and 30 million users within six months. The application is deployed on Amazon Elastic Container Service (Amazon ECS) using AWS Fargate. The application's ECS services utilize the HTTPS protocol. A solutions architect is tasked with implementing blue/green deployments for updates, ensuring traffic is distributed to each ECS service via a load balancer. Additionally, the application must dynamically adjust the number of tasks in response to Amazon CloudWatch alarms. Which solution meets these requirements?