# Lead Gen Agencies: Outsourcing lead generation and cold outreach to a third-party sales development firm.
2 brands ranked by AI visibility (Brand Authority Index)
Top brands:
1. Apollo.io (BAI: 88, hr-technology)
2. Apollo.io (BAI: 78, hr-technology)
Raw queries: Lead Gen Agencies: Outsourcing lead generation and cold outreach to a third-party sales development firm.