Recommended testing tool/software/solution for application's latency

Hey there AWS-User-0484764,

I completely understand your concern about latency issues when it comes to a distributed application running on AWS. It's a common headache, especially when catering to B2B users across regions. Kudos to you for proactively addressing this!

From my own experience, JMeter, soapUI, and CloudWatch/X-Ray are indeed solid choices. However, if you're looking for a more streamlined and comprehensive solution, you might want to consider using Apache Kafka along with Apache Kafka Streams for real-time monitoring and analysis of application latency.

Kafka is renowned for its scalability and low-latency data streaming capabilities. By instrumenting your application to produce latency data to Kafka topics, you can then employ Kafka Streams to process and analyze this data in real-time. This allows you to gain deeper insights into not just network and inter-AWS service latency but also your application's latency.

Furthermore, consider integrating AWS Lambda into the mix for auto-remediation actions based on predefined thresholds. This combination should give you a robust solution to monitor and address latency concerns efficiently.