What does it mean?
For salespeople, an SLA is an agreement between a company's sales and marketing teams that defines the expectations Sales has for Marketing and vice versa. The Sales SLA defines the expectations Marketing has for Sales on how deeply and frequently Sales will pursue each qualified lead, while the Marketing SLA defines expectations Sales has for Marketing with regards to lead quantity and lead quality.
SLAs exist to align Sales and Marketing. For companies to achieve growth and become leaders in their industries, it is critical that these two groups be properly integrated.