A Registry Service is a system that manages and maintains a database of information, often related to specific entities like domain names, software packages, or digital certificates. It ensures that the data is accurate, up-to-date, and accessible to users who need to register, update, or retrieve information about these entities. These services play a crucial role in various industries, including internet governance and software development. For example, a domain name registry service helps individuals and businesses secure their online presence by registering unique domain names, while a software registry service allows developers to share and manage software packages efficiently.