URLSubmit

URLSubmit[url] submits the specified URL to be executed asynchronously.

URLSubmit[url,{param1->val1,param2->val2,…}] submits the specified URL, adding elements with names parami and values vali. 

URLSubmit[obj,…] submits the cloud object obj.

URLSubmit[HTTPRequest[…],…] submits the specified HTTP request.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.