Abstract: For applications that are designed to operate across multiple computer environments, an application distribution service may store multiple different versions of application packages, the different versions being applicable to different computing environments. Application targeted metadata associated with the application packages may be utilized to quickly diagnose the applicability of the application packages to a client device with low bandwidth cost, and before any package distribution is commenced.

Abstract: Registration of an application in a per-user registration model includes the creation and storage of duplicate registration data for multiple user accounts present on a system. This duplication of registration data may be reduced by storing at least a portion of identical data in a per-machine location in the system memory where it is accessible to all user accounts. Instead of needing to separately re-compute and/or re-store duplicate registration data in multiple per-user locations in the memory, each user account may access and utilize the registration data stored in the per-machine location. Pre-computing and storing a portion of the application registration data in a per-machine location in the memory may also allow the system to defer the registration of the application.

Abstract: Registration of an application in a per-user registration model includes the creation and storage of duplicate registration data for multiple user accounts present on a system. This duplication of registration data may be reduced by storing at least a portion of identical data in a per-machine location in the system memory where it is accessible to all user accounts. Instead of needing to separately re-compute and/or re-store duplicate registration data in multiple per-user locations in the memory, each user account may access and utilize the registration data stored in the per-machine location. Pre-computing and storing a portion of the application registration data in a per-machine location in the memory may also allow the system to defer the registration of the application.

Abstract: For applications that are designed to operate across multiple computer environments, an application distribution service may store multiple different versions of application packages, the different versions being applicable to different computing environments. Application targeted metadata associated with the application packages may be utilized to quickly diagnose the applicability of the application packages to a client device with low bandwidth cost, and before any package distribution is commenced.