A 5-person search team at one of Greece's biggest performance agencies.
Advengers is a Greek performance marketing agency with one of the largest client rosters in the country. Blue Star Ferries (the ferry operator that runs much of Greek island travel). Alfredson.gr (one of Greece's largest gas and energy providers). Major Greek casinos. Leading news sites. The work spans paid media, SEO, conversion optimization, and (over the last six months) generative engine optimization.
Giannis Kapogiannis leads the search team. Five people. Sitting under Performance Director George. Two years on Writesonic for SEO audits, pitch decks, and content briefs. The last six months have been spent building out a GEO practice that fits inside the same workflow.
Greek companies were invisible in AI search. Their senior directors were afraid of it.
The shift in buyer behaviour was clear: tourists planning Greek island trips were asking ChatGPT for ferry recommendations before they searched on Google. Local buyers were doing the same for energy plans, casino visits, and news. None of Advengers' clients showed up in those answers. Their competitors did.
Selling the problem was the harder part.
“Senior directors and marketing directors at our clients are afraid of AI. The bigger the team, the more inertia.”
Giannis Kapogiannis, Search Lead at AdvengersAdvengers built an educational pitch deck to fix that. The deck walks each client through what generative engine optimization is. How AI is reshaping search behaviour in their sector. Where their competitors already appear in AI answers. And a clear roadmap that connects SEO and GEO into a single strategy.
The pitch deck flipped the room. Clients who arrived skeptical or scared left the meeting asking when implementation could start.
"Your competitor is there. You're not." The sales hook.
The single sharpest moment in every pitch is the prompt-gap moment. Giannis pulls up Writesonic's prompt gap analysis on screen, shows the client a list of prompts where their competitor is mentioned and they aren't, and watches the conversation change.
“When we show clients their competitor appearing in a prompt and they don't, the reaction is 'Oh no, I have to be there.' That's our best sales tool.”
That moment converts the pitch. Fear of AI flips into fear of losing the prompt to a competitor. From there, the conversation turns into a roadmap discussion.
The 3-step GEO process Advengers runs for every client.
The process is built to be repeatable across the agency portfolio.
Step 1. Technical audit. GEO without a clean technical foundation doesn't work. Advengers runs a full SEO + GEO audit before any content moves: site structure, schema markup, robots.txt, indexability, internal linking. Whatever blocks AI bots from crawling and parsing the site gets fixed first.
Step 2. Prompt research. Treat prompts like keywords. Advengers uses Writesonic's prompt gap analysis to map the prompts that competitors rank in but the client doesn't. The team then prioritises which prompts to chase based on commercial value and citation density.
Step 3. Content creation and optimization. For every prioritised prompt cluster, Advengers builds authoritative content tied to the client's product. For Blue Star Ferries, that meant comprehensive Greek-island destination guides. The team doesn't try to write a separate page per prompt. They build authority hubs and route AI-relevant signals through internal links to the booking pages.
“We don't separate SEO and GEO. They're one strategy. Strong SEO feeds AI visibility. AI visibility drives traditional search.”
Blue Star Ferries: 15% visibility lift. 100 new citations. 6 months.
Blue Star Ferries was the first client where Advengers ran the full 3-step process. The site started with a strong technical foundation (DR 79) and a recognised brand. The gap was AI search. Hellenic Seaways was being recommended for Greek island ferry queries; Blue Star wasn't.
The agency ran the technical audit, did the prompt research, and built out destination guides on Mykonos, Santorini, and other islands tied to Blue Star's routes. Each guide covered the destination context (food, beaches, culture, transportation) and routed AI-readable signals through to the ferry booking pages.
Six months later (with roughly two months of active content work after the sales and strategy phase), the dashboard showed:
• AI visibility: +15% in 6 months
• Pages cited by AI: 473 (100 new citations)
• First-brand-mention rate: +15.5% vs Hellenic Seaways
The first-brand-mention metric is the one that hit hardest. When AI platforms now answer queries about Greek ferry travel, Blue Star Ferries is the first brand named more often than Hellenic Seaways. That's the position every client wants.
“We have a strong sentiment that this works. Now we want to extend GEO across our entire client portfolio.”
Giannis Kapogiannis, Search Lead at AdvengersWhat's next: Greek-language tracking, full client portfolio.
Two operational asks are on Giannis's roadmap right now.
Greek-language prompt tracking. Advengers is running prompts through Writesonic in English today. Greek tourists and Greek B2B buyers ask AI tools in Greek. Once Greek-language tracking ships (Writesonic confirmed it's in development), Advengers expects another step-change in measurement quality.
Portfolio-wide rollout. Three GEO clients today. The plan is to extend the 3-step process to the rest of the roster: the energy provider, the casino accounts, the media clients. Each sector needs its own prompt research, but the process stays the same.
For Advengers, GEO has gone from an experimental service line to a positioning advantage. Greek brands looking to show up in AI search now have one agency in the country that's running the system end-to-end.
