Run modes allow you to configure AEM instances for specific purpose.
Two types of run modes in AEM-
1. Standard Run modes: Run modes provided by AEM. They cannot be changed once AEM instance is installed. Mainly they are Author and Publish.
2. Custom Run modes: Along with standard run modes we can add our custom run modes. Custom run modes can be environment specific. Mainly they are development, QA, staging and production. They can be changed on every instance re-start.
1. author, dev
2. publish, test
Problem:: How to check active run mode of AEM instance?
Step 1 - Goto http://localhost:4502/aem/start.html
Step 2 - Goto Tools section.
Step 3 - Goto Operation and then System Overview as below screenshot.