OnSite System Architecture

Components of the OnSite Architecture Diagram

Component	Description
OnSite app	React native app client
Apollo GraphQL Server	An open-source, spec-compliant GraphQL server that is compatible with any GraphQL client, including Apollo Client.
Archibus WebC Mobile Service	Provides REST APIs to return business data to the Apollo server.
AWS API Gateway	Provides push notification APIs to send push notifications to the OnSite app.
ANPS	Apple Push Notification service. https://appstoreconnect.apple.com/
FCM	Firebase Cloud Messaging. https://console.firebase.google.com
AWS SNS Service	AWS Simple Notification Service (SNS) sends notifications as A2A (application-to-application) and A2P (application-to-person).