The AI marketing agency built for the engines, not retrofitted from SEO.
e21designs is the Chennai AI marketing agency engineering brand presence inside ChatGPT, Perplexity, Gemini and Claude, for ₹50 crore-plus Indian B2B firms whose buyers are now AI-search-native. Same firm. Same methodology. The work below is what most agencies call "AI marketing", and where our engineering goes deeper than the headline.
AI marketing at e21designs is not paid-media-with-ChatGPT-tools. It is the engineering discipline of making your firm citable, retrievable and recommendable when an AI engine answers a buyer's question in your category.
The work covers four engineered layers: AI search visibility (citation share across ChatGPT, Perplexity, Gemini, Claude), generative engine optimization (GEO), answer engine optimization (AEO), and AI-native content infrastructure (schema, llms.txt, factual-claim density, entity coherence). Our methodology is published: The Cited Brand System™.
The deliverable is a single number, the Citation Score™ (0–100), that moves measurably every month. Median Indian B2B firm in 2026: 31. Category-leading firms: 72+.
What "AI marketing" actually means in 2026.
"AI marketing" is one of the most over-used and under-defined phrases in Indian B2B today. To most agencies, it means using ChatGPT to write blog posts faster. To the few that have invested in the discipline, it means engineering the citation infrastructure that decides whether AI engines name your brand when buyers run category-defining prompts.
The difference matters. A blog post drafted in ChatGPT is a productivity gain. Brand visibility inside ChatGPT is a moat that compounds for the rest of the decade. One ends at the writer's desk. The other ends with a procurement head in Mumbai or a CFO in Bangalore reading three vendor names and calling the first.
e21designs builds the second. We do not write SEO content. We do not run paid ads. We do not ship social calendars. We engineer the four-layer citation infrastructure. Entity, Evidence, Echo, Engine, that decides whether the AI engine returns your name. Same firm, published methodology, ten partnerships per year by application only.
ChatGPT-assisted SEO content + paid ads
Faster blog writing. Programmatic email subject-line tests. Ad-creative variants. Useful productivity. Does not move AI citation share. Does not change whether the model recommends you. Most agencies stop here.
Engineering citation infrastructure for the engines
The Cited Brand System™ · Entity coherence (Wikipedia, Wikidata, sameAs), distributed evidence (Reddit, trade press, YouTube, podcasts), on-site Echo (schema, llms.txt, factual-claim density), and weekly Engine measurement across four AI engines. Moves Citation Score 0→72 over 12–18 months.
Four engineered services. One method. One score.
Generative Engine Optimization (GEO)
The full citation-infrastructure engagement. Entity graph, off-site evidence layer, on-site Echo rebuild, weekly four-engine tracking. The cornerstone of e21designs' work.
Read what GEO is →Answer Engine Optimization (AEO)
Optimising your firm to be the single direct answer when buyers ask a category-defining question. AEO is a tighter subset of GEO, fewer engines, sharper intent, shorter time-to-citation.
Read the AEO method →AI SEO + Schema Architecture
The on-site Echo layer of the Cited Brand System. Full schema graph (Organization, Service, Product, Person, FAQPage, Review, BreadcrumbList, Speakable), llms.txt deployment, factual-claim density audit, sub-1.5s LCP mobile.
Read the AI SEO method →AI Visibility Measurement
The Engine layer · weekly tracking across ChatGPT, Perplexity, Claude, Gemini · citation source attribution (Reddit, Wikipedia, trade press, own domain) · monthly Citation Score deltas reported to the partner.
Read about the free Citation Score →Six industries. One AI marketing discipline.
The same AI marketing engineering. Entity, Evidence, Echo, Engine, adapts per industry. Manufacturing buyers see your name in procurement-head AI prompts. Healthcare buyers see your hospital when patients ask AI before booking. Education buyers see your programme when aspirants prompt for shortlists. The methodology is fixed; the evidence sources are industry-shaped.
B2B Manufacturing · B2B SaaS · Healthcare · Education · FMCG · D2C · Public Figures · All six industries →
The questions Indian B2B operators ask before signing.
Is "AI marketing" the same as SEO? · No. SEO ranks pages in Google. AI marketing, done correctly, engineers whether AI engines like ChatGPT, Perplexity, Gemini and Claude return your firm's name when a buyer asks the category-defining question. The data behind this →
What does an AI marketing engagement cost for a ₹50 Cr+ Indian B2B firm? · Strategic Audit ₹9,999 (refundable on engagement). Growth Foundation ₹12–35 lakh (60–90 days). Authority Engine ₹5–9 lakh/month. Annual Partnership ₹1.5–4 Cr/year. Open pricing →
How fast does AI citation share move? · First measurable lift at 60–90 days. Compounding gains accelerate at 6–12 months. Category leadership is a 12–24 month outcome. See window status by industry →
Can our in-house team do this? · The on-site Echo work (schema, FAQs, factual rewrites) yes, if you have a senior content engineer who has retrained. The off-site evidence layer, trade press, Wikipedia, Reddit literacy, podcast tour, original research, requires editorial relationships and time horizons most in-house teams don't have. Three diagnostic questions before signing →
What's the first step? · The free AI Visibility Read, drop your URL and a work email · within five working days you receive your Citation Score (0–100), the twelve indicators behind it, three quick wins for your in-house team, and a written recommendation on whether engagement is warranted. Five reads per month, reviewed personally by Dr. Avinaash.
Get your firm's AI marketing baseline · free · five working days.
If you operate a B2B firm above ₹50 crore in revenue and you want to know what AI engines say about your category, drop your URL at /apply. We send back your Citation Score, the twelve indicators behind it, and three quick wins your team can ship in thirty days. No newsletter. No follow-up sequence. Reviewed personally by Dr. Avinaash.
Related on the firm
The Cited Brand System™ · AI SEO services · 22 direct answers · State of AI Citation · Q2 · Best GEO agencies India 2026 · Pricing