Streaming CloudWatch metrics to VPC-based OpenTelemetry collectors using Lambda

Building a scalable user search layer on top of Amazon Cognito

Here is a 3-sentence summary of the blog post: To build a scalable user search layer on top of Amazon Cognito, developers can combine AWS Lambda, Amazon DynamoDB, and Amazon OpenSearch Service to create a comprehensive search layer with features like multiple search types, complex filtering, and high performance. The solution architecture captures user data during authentication and updates it in real-time using Cognito Lambda triggers and AWS CloudTrail, which then index the data in OpenSearch Serverless through DynamoDB Streams. This scalable, event-driven architecture supports powerful use cases like locating users across thousands of accounts, segmenting users by group membership, and auditing user attributes with complex filtering.