Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for managing operation of telecommunications devices. In one aspect, a method includes actions of executing a container program that lacks scripts that manage operation of telecommunications devices that interact with a cloud platform, monitoring messages generated by the telecommunications, filtering the messages to select a subset of messages that trigger execution of the scripts by the container program, identifying, for each selected message in the subset of messages and from an index of available scripts, a particular script that is executed in response to receipt of the selected message, merging each particular script with the container program to create a management program that manages operation of the telecommunications devices based on the subset of messages, and managing operation of the telecommunications devices with the management program.