Chatbots Development with Amazon Lex - Lambda Introduction

The video tutorial discusses the importance of having a backend for a chatbot, specifically using AWS Lambda. It explains that AWS Lambda allows running code without managing servers, offering a serverless cloud interface. The tutorial highlights Lambda's features, such as automatic scaling, cost efficiency, and optimized performance. It also mentions the AWS free tier for learning and the process of integrating Lambda with Lex.

Explain the significance of not having to manage infrastructure when using AWS Lambda.

What is meant by 'optimized code execution time' in the context of AWS Lambda?