The paper focuses on the impact of web frameworks on serverless applications, specifically cold start issues in AWS Lambda environments. The authors conducted an experiment using five popular NodeJS frameworks and compared their performance with a plain NodeJS package. They found that adding a web framework can introduce latency to the cold start process, but the effect is more significant due to initialization time rather than package size. The results suggest that code initialization time should be the main criterion for choosing a web framework when it comes to minimizing cold start performance. The authors recommend using tools to assess cold start time and not ruling out web frameworks based solely on their size.