> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/appendices/appendix-a-glossary/glossary-toolpack/glossary-tboamapp/master-slave.md).

# Master/Slave

### Master

Master is a module state that indicates which module instance is taking decisions for the system.

### Slave

Slave is another instance state that indicates the module is taking orders from the master application. The slave instance can still exectute some actions as opposed to [Active/Standby](/appendices/appendix-a-glossary/glossary-toolpack/glossary-tboamapp/master-slave/active-standby.md) modules where the standby module does not take any actions.

### Example

Example: tboamapp is a master/slave type application. The master tboamapp makes most decisions, but the slave tboamapp is still responsible to start applications on its host.


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