About us

The Media Stack was founded by John Rahim, an industry veteran, who has spent over 30 years working in digital agencies, agency groups and technology companies. Whilst working for agency groups, he worked for digital and technical agencies at WPP, Omnicom, Publicis, Interpublic, and the Engine Group/Next15. Over the past decade, he’s been working for marketing technology consultancies and SaaS companies and represent the Berlin-based AI publishing company Purple in the UK market.

The problem I kept seeing again and again was: marketers don’t understand the technology platforms that power their campaigns, and tech companies don’t understand marketing strategy.

So The Media Stack was founded to bridge that gap.

Most marketing publications tell you WHAT’s changing. We explain HOW and WHY—because John Rahim has worked on delivering strategies, implemented the platforms, and sat in the rooms where these decisions were made.

What I cover:

I write about marketing strategy, advertising trends, and the technology that powers both. That includes WARC reports, Cannes Lions analysis, agency moves, measurement challenges, interviews with agency and tecnology leaders, AI tools, and creator marketing ROI.

Why it’s different:

Were not just observing this industry from the outside. I’m working in it. That means:

  • I see the technology roadmaps before they’re announced

  • I understand why certain strategies fail (because I’ve seen the implementation)

  • I know what actually works versus what sounds good in a presentation

We will be at Cannes Lions Festival 2026 covering the creative effectiveness debate, tracking how AI is reshaping attribution, and talking to CMOs about what they’re actually concerned about.

Who The Media Stack is for:

Marketing professionals who want to understand the technology underneath the trends. Agency leaders who need to explain to clients why measurement is broken. Anyone who’s tired of surface-level marketing content that ignores the business impact.

Subscribe for free to get occasional posts, or upgrade to £4.99/month for full access.

Contact: news@themediastack.co.uk

Stay up-to-date

Never miss an update—every new post is sent directly to your email inbox. For a spam-free, ad-free reading experience, plus audio and community features, get the Substack app. You can also view free publication archives.

Share a story

If you want to contact me or if you have a story you would like to share please email news@themediastack.co.uk

User's avatar

Subscribe to The Media Stack

The Media Stack delivers in-depth analysis of the advertising, media, and marketing technology sectors, with a focus on emerging trends in AI and monetisation.

People