On-demand network code execution with cross-account aliases

A computer-implemented method to enable to enable use of tasks on an on-demand code execution environment as application programming interfaces, the computer-implemented method comprising:

• receiving, from a first computing device associated with a first account on the on-demand code execution environment, executable code corresponding to a set of tasks, wherein execution of the executable code corresponding to an individual task implements functionality associated with a network-accessible service;
• receiving, from the first computing device, a request to designate the set of tasks as an application programming interface (“API”) for the network-accessible service;
• receiving from a second computing device associated with a second account an API call corresponding to a task of the set of tasks;
• selecting a virtual machine instance within the on-demand code execution environment on which to execute code corresponding to the task, wherein the virtual machine instance is associated with at least one of execution of tasks of the first account or execution of tasks of the second account;
• executing within the virtual machine instance the executable code corresponding to the task on behalf of the second account;
• monitoring computing resources associated with the execution of the code;
• and
• attributing computing resources associated with the execution of the code to the second account.

Non-transitory computer-readable storage media including computer-executable instructions that, when executed by a computing system, cause the computing system to:

• receiving, from a computing device associated with a first account on the on-demand code execution environment, a call to an application programming interface (“API”) for a network-accessible service, wherein the API is implemented via a set of tasks on the on-demand code execution environment owned by a second account, and wherein individual tasks of the set of tasks correspond to executable code that, when executed on the on-demand code execution environment, implement functionality corresponding to the individual tasks;
• identify a task on the on-demand code execution environment corresponding to the call;
• select a virtual machine instance within the on-demand code execution environment on which to execute code corresponding to the task, wherein the virtual machine instance is associated with at least one of execution of tasks of the first account or execution of tasks of the second account;
• execute within the virtual machine instance the executable code corresponding to the task on behalf of the first account;
• monitor computing resources associated with the execution of the code;
• and
• attribute computing resources associated with the execution of the code to the first account.