Abstract: Systems and methods are described herein relating to backing up applications or applications stacks that utilize two or more computing resources. In some aspects, a snapshot of operating states of a collection of computing resources that operate collectively as an application may be captured and stored as an application recovery point. The application recovery point may include an application definition that identifies first and second computing resources usable to provide the application, a first computing resource recovery point, which upon restoration, restores the first computing resource according to the snapshot, and a second computing resource recovery point, which upon restoration, and restores the second computing resource according to the snapshot. Responsive to a request to restore the application using the recovery point, the collection of computing resources may be launched in a coordinated way to instantiate the application according to the application recovery point.

Abstract: In a message delivery system, messages are published by publishers and delivered to subscribers based on subscriptions relating to message content. Activation and de-activation notifications are supplied to applications that are bound to a queue in the message delivery system.