Corporate social responsibility (CSR) is a topic that has come to the forefront in the field ofadministration. Generally, it is analyzed in shades of white or black, from a virtually utopianor critical perspective. The purpose of this article is to demonstrate that CSR should be studiedfrom a third perspective in which today’s companies face the new challenge of sustainability. CSRcan be a very good strategy for achieving sustainability, thus resulting in a mutually beneficialand delicate symbiosis between business and society. To account for this, we opted to carry outcase studies and complement them with interviews and documentary analysis.