Abstract: Methods, systems, and computer-readable media for fleet-wide management of software packages are disclosed. A package management service is offered to a plurality of clients in a multi-tenant environment. Using the package management service, a package set is determined that comprises metadata identifying a plurality of software packages and desired states associated with the software packages. The software packages are from a catalog. Deployment of the package set is initiated to a plurality of computing devices. The deployment comprises reaching the desired states for the software packages in the package set for the computing devices.

Abstract: A service is disclosed that allows configuration, management and deployment of instances. A configuration document can be stored by the service and one or more instance identifiers can be linked to the configuration document. As a result, multiple instances can be launched and configured using a single configuration document allowing for a consistent result across instances. Local agents running on the instances can execute plug-ins in order to effectuate the configuration. As a result, administrators of instances can configure, manage and easily deploy their unique instance configurations. Customers who manage their instances can scale and manage their entire fleet with repeatable configuration tasks that seamlessly integrate into their instance workflow.

Abstract: A method for communicating messages between a service and a virtual machine instance may include receiving a message from a service. The message includes a target instance identification of at least one virtual machine instance (VMI) to receive the message. A notification of the message and the target instance identification is stored in a message queue for each of a plurality of host servers associated with a plurality of VMIs. The message is stored in a message store without storing at least a portion of the message in the message queue. A request for undelivered messages is received from a VMI associated with a customer account. In response to the request, it is determined that a local cache contains an indication that the message is undelivered, where the local cache is within at least one of the plurality of host server computers associated with the VMI sending the request.

Abstract: A service is disclosed that allows configuration, management and deployment of instances. A configuration document can be stored by the service and one or more instance identifiers can be linked to the configuration document. As a result, multiple instances can be launched and configured using a single configuration document allowing for a consistent result across instances. Local agents running on the instances can execute plug-ins in order to effectuate the configuration. As a result, administrators of instances can configure, manage and easily deploy their unique instance configurations. Customers who manage their instances can scale and manage their entire fleet with repeatable configuration tasks that seamlessly integrate into their instance workflow.