AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It lets clients run code without provisioning or managing servers.
Spring Boot is an open source Java-based framework used to create micro-services. It is developed by Pivotal Team and is used to build stand-alone and production-grade Spring applications.
Wire is a secure messaging & collaboration tool for businesses with end-to-end encryption, group chats, video & voice calls, file sharing and screen sharing.