App actions in a content management system

A content management system (CMS) providing integration between third-party applications (APPs) developed separate from the CMS and configured for use with an editor application of the CMS, the CMS comprising at least one server computer, said at least one server computer being configured to perform the following operations:

• installing a first APP and a second APP in a content project of the CMS, the first APP and the second APP being ones of the third-party APPs developed separate from the CMS, wherein installing the first and second APPs enables functionalities of the first and second APPs to be accessed for the content project through the editor application, wherein the editor application provides an interface for editing the content project;
• wherein the content project includes a plurality of content types and a plurality of content entries, said content entries being structured in accordance with said content types, said content entries being configured to store content of the content project that is editable through the editor application;
• receiving, by the CMS from the first APP, a request to invoke an action by the second APP;
• responsive to receiving the request, then validating contents of the request;
• responsive to successful validation of the request, then sending an acknowledgement from the CMS to the first APP, and generating a call from the CMS to the second APP to invoke the action by the second APP, wherein the call to the second APP is configured to be asynchronous, such that the CMS does not wait for a result of the call to the second APP;
• wherein the CMS enables the first APP to trigger the action by the second APP without requiring the first APP to communicate with the second APP.