In the ever-expanding realm of digital connectivity, the significance of IP addresses cannot be overstated. The transition from IPv4 to IPv6 has become imperative to accommodate the growing number of devices connected to the internet. AWS, a leading cloud computing platform, recognizes the importance of this transition and offers specialized training courses to equip professionals with the skills needed for this evolving landscape. The IPv4 Era: An Overview The Internet Protocol version 4 (IPv4) has been the backbone of internet communication for decades. Its 32-bit address format limited the total number of unique addresses to approximately 4.3 billion, a number that seemed inexhaustible in the early days of the internet. However, with the proliferation of smartphones, IoT devices, and the increasing digitalization of various industries, this limited address space has become a bottleneck. AWS Training Course delve into the fundamentals of IPv4, explaining its structure and limitation