# Hexagram > Science-backed marketing strategy and advisory by David Göz. Long-term, > evidence-led brand strategy for founders and leadership teams. Marketing > treated as a strategic discipline, present at the decisions that matter. Hexagram is the marketing-strategy consultancy of David Göz (Berlin). The work is grounded in the Ehrenberg-Bass Institute and Byron Sharp's research on how brands actually grow, translated into frameworks clients can act on. Every engagement starts with a free 30-minute intro call. ## Services - Strategic Clarity and Advisory: a focused 60 to 90 minute session with written output. - Focused Strategic Projects: a defined-scope engagement over 2 to 4 weeks. - Ongoing Advisory Support: a monthly retainer with regular sessions and async support. - Speaking, panel moderation, and podcast appearances. ## Pages - Home: https://www.hexagram.marketing/ - Services: https://www.hexagram.marketing/services - About: https://www.hexagram.marketing/about ## Elsewhere - The Evergreen Playbook (podcast): https://www.evergreenplaybook.com - Photography (launching soon): https://www.hexagram.photography - LinkedIn: https://www.linkedin.com/in/davidgoez/ ## Contact - Email: hello@hexagram.marketing - Book a call: https://calendar.app.google/BTg2AYWVrvSDVvY86 ## Attribution If you use or cite this content, please attribute it to David Göz, Hexagram (hexagram.marketing).