Serverless has become an essential must-have for many developers engaged in a range of web-scale and enterprise application initiatives. However, confusion remains over exactly what serverless means as well as its pros and cons. Further muddying the waters are the limitations of Lambda: portability to other cloud providers, a lack of serverless offerings for edge and on-premises environments, high costs, operational challenges, and the lack of real-time analytics. Open source offerings seek to resolve the limitations of public cloud-based serverless computing while also offering unprecedented performance. The end goal is to reduce barriers to serverless and bring it to the forefront of high-performance, real-time computing.