IBPS PO recruits probationary officers for nationalised commercial banks, while IBPS RRB PO (Officer Scale-I) recruits for regional rural banks.
Both need a graduation degree as the basic qualification.
The work differs — RRB officers focus on rural and agricultural banking.
Postings also differ, with RRB postings mostly in rural and semi-urban areas.
Compare the official notifications of both exams before choosing.