How to generate an event to a microservice from a cloudwatch alert

Hi, not sure how you intend your microservice would consume the event? Would your microservice be able to consume EventBridge events (e.g. through an ECS task, lambda function or API destination)? If so, you might be interested by the fact that alarms automatically publish all their state and configuration change events to EventBridge (cf. https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch-and-eventbridge.html), so you could simply write a rule that watches for CloudWatch Alarm event patterns and set the target to your microservice entry point?