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AWS built a managed service called AppSync and released it in 2021. It’s feature rich, as it allows you to easily connect resolvers to Lambda, OpenSearch, and Aurora. AppSync integrates with CloudWatch natively and forwards a lot of metrics about your AppSync endpoints without the need for further configuration. The metrics reported by AppSync by CloudWatch are: Number of 4xx errors, number of 5xx errors and number of cache statistics. Request latency – how long it takes to fully process a request, including possible response template mappings. Sample count statistics – the number of API requests. If caching is enabled, the cache statistics include: