Laravel and GraphQL are used to build an invitation system that allows users to invite their friends and colleagues, accelerating user acquisition and adoption. The system uses Lighthouse, a library that provides tools and conventions for creating a GraphQL schema, resolving queries, and executing mutations. Twilio's SMS service is used to send invitations via SMS. The system consists of two main components: the server-side API and the client-side application. The server-side API uses GraphQL to query and manipulate data, while the client-side application uses Insomnia, a GraphQL testing client, to test the API. The system includes features such as user authentication, email verification, and invitation sending via SMS.