A key performance indicator (KPI) is a quantifiable measure that shows how well a business is achieving its goals. Sales KPIs are present at various tiers - a top-level KPI might assess overall performance, like yearly expansion, while a lower-level KPI would concentrate on everyday tasks, such as the number of sales emails dispatched.

A knowledge base is a digital repository of information related to a company. It encompasses a wide range of content, from details about products to sales strategies and marketing outlines. Internal knowledge bases are designed for employee use, whereas external knowledge bases are customer-oriented and often feature FAQs and instructions on product usage.