This tutorial is part 1 of this series. As a developer that has implemented a data graph using GraphQL server you may be faced with the question of how to manage an ever-growing data graph and the services that support it in an efficient and scalable way while achieving a true separation of concerns. One option available is to utilise Apollo schema federation, which uses a Gateway to compose a single data graph which acts as a unified interface for querying consolidated data from all of your services. Furthermore, the Apollo graph manager will help you manage, validate, and secure your organisation’s data graph from a single location accessible by all developers.