What is BMC BladeLogic

BaldeLogic is a server automation suite. 
An admin needs to manage sever configuration, patching,  compliance, change control, change management, provisioning etc.
BaldeLogic does this automation when several server needs this activities to be done. 
In order to Bladelogic infrastructure has BSA centralized interface using that admin sets configuration,  deploy, etc for any number of servers. 
All servers needs an agent to be installed. BSA uses port 4750 to call all the agents and achieve this requirement.