# Heron GTM > Heron GTM is a B2B outbound agency that builds and runs outbound for B2B companies, from buying signals to booked calls. B2B outbound agency based in Seville, Spain, founded by Louis Seyns, that builds and runs outbound for B2B companies. ## About - [About Heron GTM](https://herongtm.com/about/): who we are and what we do - [Louis Seyns](https://herongtm.com/louis-seyns/): founder of Heron GTM ## Guides - [Signal-Based Outbound: Reach Out With a Reason](https://herongtm.com/guides/signal-based-outbound/): Signal-based outbound explained: what a buying signal is, where it shows up in public and how a reason to write changes the first line of a message. ## Comparisons - [Outbound vs Hiring an SDR: Cost, Time and Risk](https://herongtm.com/compare/outbound-vs-hiring-an-sdr/): Hiring an SDR or running outbound through an agency: what each costs, how long each takes to start and what your company still has to own either way. ## Profiles - [LinkedIn company page](https://www.linkedin.com/company/heron-gtm) - [Crunchbase](https://www.crunchbase.com/organization/heron-gtm) - [Clutch](https://clutch.co/profile/heron-gtm) - [Sortlist](https://www.sortlist.com/agency/heron-gtm)