Leads may come from various sources or activities, for example, digitally via the Internet, through personal referrals, through telephone calls either by the company or telemarketers, through advertisements, and events. A 2015 study found that 89% of respondents cited email as the most-used channel for generating leads, followed by content marketing, search engine, and finally events. A study from 2014 found that direct traffic, search engines, and web referrals were the three most popular online channels for lead generation, accounting for 93% of leads.
Lead generation is often paired with lead management to move leads through the purchase funnel. This combination of activities is referred to as pipeline marketing.
A lead is usually allotted to an individual to follow up on. Once the individual (e.g. salesperson) reviews and qualifies it to have potential business, the lead gets converted to an opportunity for a business. The opportunity then has to undergo multiple sales stages before the deal is won.