Blog

Welcome to our knowledge centre. We share the same data-driven strategies we use for our clients, helping you connect with your audience and turn every action into real growth.

Vandelay Services: SEO, GEO, Google Ads, social media and web design

AI-driven traffic outperforms the rest by 54%: what this means for your business (2026 data)

AI-driven traffic outperformed all other sources by 54% in May 2026, according to Adobe Analytics. We explain, using verifiable data, why this is happening and which sectors

AI strategy in marketing: why 85% of companies still don’t have one (2026 data)

According to the Supermetrics report from July 2026, 85% of companies use AI in marketing without a formal strategy. We explain what the readiness gap is

GEO Agency in Barcelona: how to position your business on ChatGPT, Gemini and Perplexity

A practical guide to GEO (Generative Engine Optimisation): what it is, how it differs from SEO, what llms.txt is, how to measure it, and how to get ChatGPT, Gemini and Perplexity to cite your

What a digital marketing agency does (and what it cannot do)

A clear guide to what a digital marketing agency does, what services it offers, how it differs from a freelancer or an in-house team and, above all, what it cannot do

Digital marketing agency for SMEs: how much to invest depending on your size

A practical guide for SMEs on how much to invest in digital marketing depending on their size and stage of development: indicative market ranges, where to start and which channel to prioritise depending on the objective.

SEO or SEM: which is best for your business in Barcelona (2026 comparison)

SEO and SEM aren’t in competition: they complement each other. Find out how they differ, how much each one costs in 2026, when to use each strategy and how to combine them to attract customers in Barcelona,
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