IOpipe was a monitoring and observability platform specifically designed for serverless applications, with a focus on AWS Lambda. It provided developers with real-time metrics, debugging tools, and alerts to analyze and optimize the performance of their serverless functions. IOpipe helped users gain insights into the execution of their code, identify bottlenecks, and ensure the smooth operation of serverless applications. Note that IOpipe has been acquired by New Relic, and its features have been integrated into the broader scope of New Relic's observability solutions.