Citrix Systems, Inc.

Raymond Matthew Sampson

Marcos Alejandro Di Pietro

Kevin Joseph Webster

Ashish Gujarathi

Thierry Duchastel

Luis Atencio

A technique for dynamically provisioning virtual machines for running a cloud-based software application includes querying a pool manager of a multi-tiered pool of virtual machines to identify a set of classes of virtual machines, which meet a specified size criterion, and a respective TVC (time-variant characteristic) for each class. If an identified one of the set of classes has a smaller TVC than a TVC of one of the virtual machines currently running the application, the technique proceeds to swap the current virtual machine for a virtual machine having the identified class.

Dynamically provisioning virtual machines from remote, multi-tier pool

Methods and systems for recording, tracking, and analyzing digital software usage in a distributed database that is used by multiple participants are described herein. A single usage event may occur, and may be identified by a client device. The usage event may be emitted to one or more nodes, which may include an aggregator node and/or one or more validator nodes. A block in a distributed database may be created to record the usage event. A mixed-mode mechanism may be used by one or more devices to validate the usage event.

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Coral Springs, FL, United States of America

Raymond Matthew Sampson