Explore how telecommunications companies leverage AWS generative AI services, including AWS Transform and Amazon Bedrock, to automate legacy system migrations in this 53-minute conference talk from AWS re:Invent 2025. Discover how Communication Service Providers (CSPs) modernize Mainframe systems and VMware environments using AI-powered assessment tools, automated infrastructure-as-code generation, and intelligent legacy code transformation. Learn from AT&T's strategic vision and implementation approach for AI-powered Mainframe modernization, gaining insights into practical applications of generative AI for large-scale telecommunications infrastructure transformation and the methodologies driving successful legacy system migrations at enterprise scale.