In a groundbreaking move, Telefonica Germany is set to migrate one million 5G customers to Amazon Web Services (AWS) cloud later this month, marking Amazon's significant entry into the global telecommunications market. This initiative, disclosed by company executives to Reuters, represents a notable shift, as it marks the first time an existing mobile operator is transitioning its core network to a public cloud on a global scale. While some telecom networks have previously shifted non-core operations to public clouds, Telefonica Germany's decision underscores a new level of integration, positioning AWS as a central component of its network infrastructure. This strategic collaboration highlights the growing convergence between traditional telecommunications and cloud computing services, with Amazon and other major players eyeing the lucrative opportunities within the telecom sector. Mallik Rao, Chief Technology & Information Officer at O2 Telefonica, expressed cautious optimism about the transition, emphasizing the need for successful implementation and a clear roadmap for future expansion. With 45 million customers in Germany, the company aims to gradually transition a significant portion of its customer base to AWS cloud by 2025-2026, pending successful outcomes in the initial phases. Financial details of the deal between AWS and O2 Telefonica remain undisclosed. However, the potential benefits of leveraging public cloud infrastructure for core network operations are evident. By utilizing AWS cloud services, Telefonica Germany anticipates cost savings, scalability enhancements, and improved resilience, enabling seamless network maintenance and upgrades without service disruptions. The partnership between AWS and O2 Telefonica represents a strategic alignment between traditional telecom operators and cloud service providers. As the telecommunications industry evolves towards software-defined networks, collaboration with cloud giants becomes increasingly crucial for incumbents to stay competitive. Notably, U.S.-based Dish emerged as a pioneer in leveraging AWS cloud for its mobile network infrastructure in 2021. The success of Dish's deployment underscores the growing feasibility and benefits of cloud-based solutions for telecom operators. Looking ahead, AWS aims to further expand its presence in the telecom cloud market, with expectations of more partnerships with operators in the coming year. As the industry continues to embrace cloud-native architectures, discussions around timing and implementation strategies will be paramount for operators considering cloud migration. With the global telecom cloud market projected to witness substantial growth in the coming years, AWS and other cloud providers are poised to play a central role in reshaping the telecommunications landscape, driving innovation, and enabling next-generation network services.