Method and system for deploying user methods across multiple cloud platforms

Methods and systems for deploying user methods across multiple cloud platforms are disclosed. The method comprises the following steps: identifying a target method defined in a user class in a process of compiling the user class; recording the method name of the target method, the parameter list and the class name of the user class into a first data file as a target method definition; generating a method identifier of the target method, and recording the method identifier in a first data file; at a specific cloud platform in the plurality of cloud platforms, setting the entry function as a specific entry function corresponding to the specific cloud platform, the specific entry function having a class name of the user class as a parameter; retrieving a particular target method definition from the first data file based on an HTTP request received at the particular cloud platform; based on the particular target method definition, a particular target method of the one or more target methods is invoked to serve th