Amazon Web Services' annual cloud conference is back in full swing in Las Vegas for the first time since the onset of the pandemic and CNBC TechCheck's Jon Fortt sits down exclusively with AWS CEO Adam Selipsky. He says that although AWS is in a temporary hiring freeze, they are absorbing spikes in the cost of energy and tech labor, making the case that its scale and experience in cloud technologies make it a port in the storm of a volatile economy.