Primer is a B2B advertising and audience targeting platform that helps marketing teams reach specific companies and decision-makers across major digital advertising channels. The platform is designed for B2B marketing, growth, and demand generation teams that rely on paid media to drive pipeline but face challenges with rising costs on channels like LinkedIn and limited scale from search. Primer improves performance in these core channels while enabling teams to expand into additional platforms such as Meta, YouTube, and Reddit. Primer aggregates and standardizes data from multiple B2B data providers, allowing users to build audiences based on firmographic, technographic, and persona-level attributes. These audiences are structured to improve match rates on ad platforms, increasing the percentage of records that can be reached and helping reduce wasted spend. The platform supports use cases such as account-based marketing (ABM), demand generation, retargeting, and pipeline acceleration. It integrates with CRM and marketing systems so audiences can reflect current pipeline data and update over time. Key capabilities include audience creation and enrichment, multi-channel activation, identity resolution without cookies, and performance analysis across campaigns. By centralizing audience building and activation in one system, Primer helps teams improve targeting precision, expand reach beyond traditional channels, and better understand the impact of their advertising efforts.