docs/data/reusables/copilot/copilot-extensions/copilot-extensions-intro.md

{% data variables.product.prodname_copilot_extensions %} are a type of {% data variables.product.prodname_github_app %} that integrates the power of external tools into {% data variables.product.prodname_copilot_chat %}. {% data variables.product.prodname_copilot_extensions_short %} are developed by {% data variables.copilot.copilot_partners %}, a group of external tools selected by {% data variables.product.company_short %} for their utility when integrated into {% data variables.product.prodname_copilot_chat_short %}. To become a {% data variables.copilot.copilot_partner %}, you can apply to the {% data variables.copilot.copilot_partner_program %}.