BRM = Business Relationship Manager.
The Business Relationship Manager is responsible for understanding the business, assisting the prioritization of projects, ensuring that projects align with the technology that provides maximum return on investment, and directing IT strategy in support of the overall business strategy.
The Business Relationship Manager is a business methodology for defining, understanding, and supporting a wide range of activities pertaining to receiving information and services and distributing them through several networks.
BRM is related to enterprise relationship managment and customer relationship managament that aims to make different facets of business relationships both precise and quantifiable.