Amazon CodeWhisperer is a machine learning model that provides code completions and suggestions in real time for multiple programming languages. It can be accessed from IDEs like VS Code, IntelliJ, AWS Cloud9, JupyterLab, and Amazon services. The presentation demonstrated how to use CodeWhisperer for autocompletions in IntelliJ and AWS Cloud9. It also discussed language support, authentication, and compared CodeWhisperer to Github Copilot.