For Open RAN what is difference between A1 and O1 interface?

RAN
1

Hi All,
For Open RAN what is difference between A1 and O1 interface?
I’m finding both interface between nonRT RIC and near RT RIC.

2

As I understand, O1 & O1* interface is mainly for management entities under umbrella of Service Management and Orchestration Framework. By these interface to manage like software management, operation management etc…

A1 interface is mainly for interaction between Near-Real Time RIC and Non-Real Time RIC under Service Management and Orchestration