1. A method comprising: receiving a request for a web application at a machine on which the web application is not configured, said receiving the request at the machine comprises: receiving the request by an application-agnostic worker process that is executed by the machine; and in response to receiving the request at the machine, performing operations at the machine using at least one processor of the machine, the operations comprising: identifying the web application based at least in part on information that is included in the request; determining that the web application is not configured on the machine; automatically configuring the web application on the machine in response to determining that the web application is not configured on the machine, said automatically configuring the web application comprises: dynamically configuring a specified worker process, by the application-agnostic worker process, to execute the web application; providing the request to the web application in response to automatically configuring the web application on the machine, said providing the request to the web application comprises: providing the request to the specified worker process by the application-agnostic worker process; determining that no requests for the web application are received at the machine for at least a specified duration of time; and automatically de-configuring the web application on the machine in response to determining that no requests for the web application are received at the machine for at least the specified duration of time.