Configurable application execution service for executing applications on virtual machines

A method, comprising:

• performing, by one or more computer systems that implement an application execution service (AES):
• providing a plurality of virtual machines hosted on one or more physical hosts to execute applications on behalf of a plurality of user accounts;
• receiving indication of an application to be executed by the AES on behalf of a user account;
• creating a group of virtual machines to execute the application;
• receiving, via a browser-based interface, a request to reserve execution time on virtual machines used by the user account;
• and
• executing the application on behalf of the user account on one or more virtual machines in the group using the reserved execution time.

One or more non-transitory computer-readable media storing program instructions that when executed on or across one or more processors implement an application execution service (AES) and cause the AES to:

• provide a plurality of virtual machines hosted on one or more physical hosts to execute applications on behalf of a plurality of user accounts;
• receive indication of an application to be executed by the AES on behalf of a user account;
• create a group of virtual machines to execute the application;
• receive, via a browser-based interface, a request to reserve execution time on virtual machines used by the user account;
• and
• execute the application on behalf of the user account on one or more virtual machines in the group using the reserved execution time.