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A government-sponsored health service is running its web application containing information about the clinics, hospitals, medical specialists, and other medical services in the country. The organization also has a set of public web services which enable third-party companies to search medical data for its respective applications and clients. AWS Lambda functions are used for the public APIs. For its database-tier, an Amazon DynamoDB table stores all of the data with an Amazon OpenSearch Service domain, which supports the search feature and stores the indexes. A DevOps engineer has been instructed to ensure that in the event of a failed deployment, there should be no downtime and a system should be in place to prevent subsequent deployments. The service must strictly maintain full capacity during API deployment without any reduced capacity to avoid degradation of service. How can the engineer meet the above requirements in the MOST efficient way?