The keynote address by AWS CEO Adam Selipsky is likely to have a positive impact on Amazon's stock (AMZN) in the short term. The focus on cloud transformation and the introduction of new innovations in key areas such as AI and machine learning are typically viewed favorably by investors, as they signal ongoing growth and investment in high-demand sectors. This can lead to increased customer adoption and potentially higher revenues for AWS, which is a significant contributor to Amazon's overall business.