Modern application architecture is increasingly centered on the frontend, driven by the demand for rich user interfaces and scalable infrastructure, leading to the adoption of technologies like single-page applications (SPAs), microservices, and serverless functions. This shift has enhanced user experience but introduced challenges in monitoring application performance. Traditional Application Performance Monitoring (APM) tools, designed for monolithic backends, fall short in providing comprehensive insights for complex frontend environments. LogRocket aims to address this gap by offering a robust solution for frontend performance monitoring with its Metrics tool, which combines session replay with APM capabilities to deliver detailed insights into CPU and memory usage, browser crashes, and page load times. By allowing developers to analyze user flows and performance metrics, LogRocket helps identify and rectify issues affecting user experience, providing alerts for significant performance changes. With a recent $15 million Series B funding round, LogRocket is expanding its efforts to enhance frontend code observability and support the development of high-quality applications.