Abstract: Technologies are described herein for differentiating normal operation of an application program from error conditions to predict, diagnose, and recover from application failures. Access to resources by the application program is monitored, and resource access events are logged. Resource access patterns are established from the logged resource access events utilizing computer pattern recognition techniques. If subsequent access to resources by the application program deviates from the established patterns, then a user and/or administrator of the application program is notified of a potential error condition based on the detected deviation. In addition, sequences of resource access events that deviate from the established resources access patterns are correlated with an error condition based on a temporal proximity to the time of occurrence of the error to provide diagnostic information regarding the error.

Abstract: The dependencies of an application are identified by intercepting application programming interface calls made by an application. A determination is then made at the runtime of the application as to whether the dependencies of the application are present. If the dependencies are not present, a client device upon which the application is executing is configured such that the dependencies are present and are made available only to the authorized application. If the dependencies are present and the application is authorized to interact with the dependencies, the application is permitted to execute.

Abstract: Technologies are described herein for differentiating normal operation of an application program from error conditions to predict, diagnose, and recover from application failures. Access to resources by the application program is monitored, and resource access events are logged. Resource access patterns are established from the logged resource access events utilizing computer pattern recognition techniques. If subsequent access to resources by the application program deviates from the established patterns, then a user and/or administrator of the application program is notified of a potential error condition based on the detected deviation. In addition, sequences of resource access events that deviate from the established resources access patterns are correlated with an error condition based on a temporal proximity to the time of occurrence of the error to provide diagnostic information regarding the error.

Abstract: Technologies are described herein for differentiating normal operation of an application program from error conditions to predict, diagnose, and recover from application failures. Access to resources by the application program is monitored, and resource access events are logged. Resource access patterns are established from the logged resource access events utilizing computer pattern recognition techniques. If subsequent access to resources by the application program deviates from the established patterns, then a user and/or administrator of the application program is notified of a potential error condition based on the detected deviation. In addition, sequences of resource access events that deviate from the established resources access patterns are correlated with an error condition based on a temporal proximity to the time of occurrence of the error to provide diagnostic information regarding the error.

Abstract: The dependencies of an application are identified by intercepting application programming interface calls made by an application. A determination is then made at the runtime of the application as to whether the dependencies of the application are present. If the dependencies are not present, a client device upon which the application is executing is configured such that the dependencies are present and are made available only to the authorized application. If the dependencies are present and the application is authorized to interact with the dependencies, the application is permitted to execute.

Abstract: The dependencies of an application are identified by intercepting application programming interface calls made by an application. A determination is then made at the runtime of the application as to whether the dependencies of the application are present. If the dependencies are not present, a client device upon which the application is executing is configured such that the dependencies are present and are made available only to the authorized application. If the dependencies are present and the application is authorized to interact with the dependencies, the application is permitted to execute.

Abstract: The dependencies of an application are identified by intercepting application programming interface calls made by an application. A determination is then made at the runtime of the application as to whether the dependencies of the application are present. If the dependencies are not present, a client device upon which the application is executing is configured such that the dependencies are present and are made available only to the authorized application. If the dependencies are present and the application is authorized to interact with the dependencies, the application is permitted to execute.

Abstract: The dependencies of an application are identified by intercepting application programming interface calls made by an application. A determination is then made at the runtime of the application as to whether the dependencies of the application are present. If the dependencies are not present, a client device upon which the application is executing is configured such that the dependencies are present and are made available only to the authorized application. If the dependencies are present and the application is authorized to interact with the dependencies, the application is permitted to execute.

Abstract: Technologies are described herein for differentiating normal operation of an application program from error conditions to predict, diagnose, and recover from application failures. Access to resources by the application program is monitored, and resource access events are logged. Resource access patterns are established from the logged resource access events utilizing computer pattern recognition techniques. If subsequent access to resources by the application program deviates from the established patterns, then a user and/or administrator of the application program is notified of a potential error condition based on the detected deviation. In addition, sequences of resource access events that deviate from the established resources access patterns are correlated with an error condition based on a temporal proximity to the time of occurrence of the error to provide diagnostic information regarding the error.

Abstract: Technologies are described herein for differentiating normal operation of an application program from error conditions to predict, diagnose, and recover from application failures. Access to resources by the application program is monitored, and resource access events are logged. Resource access patterns are established from the logged resource access events utilizing computer pattern recognition techniques. If subsequent access to resources by the application program deviates from the established patterns, then a user and/or administrator of the application program is notified of a potential error condition based on the detected deviation. In addition, sequences of resource access events that deviate from the established resources access patterns are correlated with an error condition based on a temporal proximity to the time of occurrence of the error to provide diagnostic information regarding the error.

Abstract: Determining a discrete application boundary. A method includes identifying one or more initial components of an application. The method further includes identifying statically and/or dynamically related components of the one or more initial components of the application. Identifying statically related components and identifying dynamically related components is performed iteratively. The method further includes identifying a discrete boundary for the application based on statically related components and dynamically related components.

Abstract: An extensible virtualization system provides an object model and manages a virtual application lifecycle in a way that allows new virtualization subsystems to be added to extend a virtualization product without reworking the product itself. Virtualizing an application generally involves three steps: metadata extraction, metadata storage and reconstitution, and runtime management of requests. The extensible virtualization system receives notification of an application preparation session and allows virtualization subsystems to monitor the session to collect configuration information specific to each subsystem that the application uses to run on a client. Each subsystem provides collected information to the extensible virtualization system, which stores the collected information until the application to be virtualized is deployed. When the application is deployed, the system invokes the same virtualization subsystem and provides the subsystem with the stored information.

Abstract: Determining a discrete application boundary. A method includes identifying one or more initial components of an application. The method further includes identifying statically and/or dynamically related components of the one or more initial components of the application. Identifying statically related components and identifying dynamically related components is performed iteratively. The method further includes identifying a discrete boundary for the application based on statically related components and dynamically related components.

Abstract: Providing access to resources to an application. A method includes receiving a request from an application for one or more resources. The method further includes determining that the one or more resources are not available at a primary or local storage. The method further includes identifying one or more alternative locations where the one or more resources are available.

Abstract: An application virtualization system enables server applications, such as web applications to be easily deployable, separates an application and its state from the system, and allows applications to be easily moved to another server. The application virtualization system provides a way to isolate conflicts and allow multiple applications that provide conflicting information to run independently and avoid conflicts. The application virtualization system receives notification of an application preparation session and monitors the session to collect configuration information that the application uses to run on a client. The application virtualization system stores the collected information until the application to be virtualized is deployed. When an administrator later deploys the application, the system retrieves the stored information and uses the information and information from the client to reconstitute the metadata and virtualize the application.

Abstract: Technologies are described herein for differentiating normal operation of an application program from error conditions to predict, diagnose, and recover from application failures. Access to resources by the application program is monitored, and resource access events are logged. Resource access patterns are established from the logged resource access events utilizing computer pattern recognition techniques. If subsequent access to resources by the application program deviates from the established patterns, then a user and/or administrator of the application program is notified of a potential error condition based on the detected deviation. In addition, sequences of resource access events that deviate from the established resources access patterns are correlated with an error condition based on a temporal proximity to the time of occurrence of the error to provide diagnostic information regarding the error.

Abstract: The dependencies of an application are identified by intercepting application programming interface calls made by an application. A determination is then made at the runtime of the application as to whether the dependencies of the application are present. If the dependencies are not present, a client device upon which the application is executing is configured such that the dependencies are present and are made available only to the authorized application. If the dependencies are present and the application is authorized to interact with the dependencies, the application is permitted to execute.

Abstract: An application virtualization system enables server applications, such as web applications to be easily deployable, separates an application and its state from the system, and allows applications to be easily moved to another server. The application virtualization system provides a way to isolate conflicts and allow multiple applications that provide conflicting information to run independently and avoid conflicts. The application virtualization system receives notification of an application preparation session and monitors the session to collect configuration information that the application uses to run on a client. The application virtualization system stores the collected information until the application to be virtualized is deployed. When an administrator later deploys the application, the system retrieves the stored information and uses the information and information from the client to reconstitute the metadata and virtualize the application.

Abstract: An extensible virtualization system provides an object model and manages a virtual application lifecycle in a way that allows new virtualization subsystems to be added to extend a virtualization product without reworking the product itself. Virtualizing an application generally involves three steps: metadata extraction, metadata storage and reconstitution, and runtime management of requests. The extensible virtualization system receives notification of an application preparation session and allows virtualization subsystems to monitor the session to collect configuration information specific to each subsystem that the application uses to run on a client. Each subsystem provides collected information to the extensible virtualization system, which stores the collected information until the application to be virtualized is deployed. When the application is deployed, the system invokes the same virtualization subsystem and provides the subsystem with the stored information.

Abstract: A management system for virtual applications may deploy sets of virtual applications to many client devices, dynamically allocate virtual application servers to individual clients, manage updates to the virtual applications, and provide other high level management to deployments of virtual applications. A client device may include a virtual application management client that may communicate with a management server. The management client may add or remove virtual applications to the client device based on a policy received from the management server, and may query the management server to determine a currently available virtual application distribution server when a virtual application is requested. The management server may distribute and manage versions of applications across one or more virtual application distribution servers.