Abstract: A computer-implemented method for placement of a plurality of application objects of an application within a network architecture is disclosed. The method includes generating during runtime of the application, an application topology model for the application, based on application metrics for the plurality of application objects. A resource topology model of a plurality of network nodes within the network architecture is generated based on resource metrics for the network nodes. A recommendation is generated for migrating an application object of the plurality of application objects to a network node of the plurality of network nodes using the application topology model and the resource topology model, the recommendation identifying the application object and the network node. The application object is migrated to the network node identified by the recommendation.

Abstract: A computer-implemented method for placement of a plurality of application objects of an application within a network architecture is disclosed. The method includes generating during runtime of the application, an application topology model for the application, based on application metrics for the plurality of application objects. A resource topology model of a plurality of network nodes within the network architecture is generated based on resource metrics for the network nodes. A recommendation is generated for migrating an application object of the plurality of application objects to a network node of the plurality of network nodes using the application topology model and the resource topology model, the recommendation identifying the application object and the network node. The application object is migrated to the network node identified by the recommendation.

Abstract: Techniques are described for managing execution of programs on multiple computing systems, such as based at least in part of user-specified constraints. For example, constraints related to execution of a program may be based on a desired relative location of a host computing system to execute a copy of the program with respect to an indicated target (e.g., computing systems executing other copies of the program or copies of another indicated program), on particular geographic locations, and/or on factors not based on location (e.g., cost of use of a particular computing system, capabilities available from a particular computing system, etc.). Some or all of the multiple computing systems may be part of a program execution service for executing multiple programs on behalf of multiple users, and each may provide multiple virtual machines that are each capable of executing one or more programs for one or more users.

Abstract: Techniques are described for managing communications between multiple intercommunicating computing nodes, such as multiple virtual machine nodes hosted on one or more physical computing machines or systems. In some situations, users may specify groups of computing nodes and optionally associated access policies for use in the managing of the communications for those groups, such as by specifying which source nodes are allowed to transmit data to particular destinations nodes. In addition, determinations of whether initiated data transmissions from source nodes to destination nodes are authorized may be dynamically negotiated for and recorded for later use in automatically authorizing future such data transmissions without negotiation. This abstract is provided to comply with rules requiring an abstract, and it is submitted with the intention that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: Techniques are described for managing the execution of programs on multiple computing systems, such as computing systems organized into multiple groups. A program execution service manages the program execution on behalf of multiple customers or other users, and selects appropriate computing systems to execute one or more instances of program, such as based in part on locations of one or more previously stored copies of the program from which copies of the program to execute may be acquired. For example, in some situations the selection of an appropriate computing system to execute an instance of a program is based in part on physical or logical proximity to other resources, such as stored copies of the program, executing copies of the program, and/or available computing systems.