Mosto Digital

A US boutique digital marketing consultancy — inspired by the creative energy of San Sebastián, Spain.

We believe marketing should be clear, strategic, and human — helping brands and non-profits grow with focus and intention.

Let's Talk

Marketing team collaborating during a creative strategy meeting.

Scenic coastal view from a park bench in San Sebastián, Spain, overlooking lush hills and the ocean.

Sunset along the San Sebastián promenade with ocean views and mountain landscape.

Business team discussing marketing plans during a casual office meeting

Modern office space with team members brainstorming marketing strategies.

Panoramic view of San Sebastián’s coastline and cityscape from a hillside.

Abstract white textured plastic background.

WHAT WE PROVIDE

Our Core Services

Fractional Leadership

We step in as your Fractional Programmatic or Performance Director to guide strategy, align teams, and drive results. No team replacements, just expert leadership that fills the gaps, sharpens execution, and saves you from bloated agency fees.

Strategy & Analytics

Everything starts with tracking what matters. We bring a leadership-level view to analytics — aligning media with business goals, setting up proper reporting, and building real-time dashboards that empower smarter decisions.

Programmatic Advertising

Programmatic done right — across display, video, audio, and CTV. We bring strategic targeting, full transparency, and a focus on outcomes, not just impressions.

B2B Targeting & LinkedIn Ads

Target high-value decision-makers on LinkedIn and beyond. We build precise B2B campaigns using your target account list, and report on company and job title-level performance to ensure we’re reaching the right people.

CTV & Online Video

Reach the right audiences with connected TV and premium video campaigns. Built for visibility, viewability, and impact — without wasted spend.

Geofencing & Event-Based Targeting

Reach the right people at the right place and time with ads served near events, stores, or digital billboards.

ABOUT

About Me

Founder | Media Strategist & Advocate for Transparent Marketing

I’m Sebastian, founder of Mosto Digital.

I launched Mosto Digital to give brands and nonprofits a smarter, more transparent alternative to traditional agencies.

For 15+ years, I've helped both global brands and fast-growing startups — and I've seen firsthand how often clients are overcharged, underserved and handed off to junior teams.

Mosto was built to change that. Just clear, effective digital marketing.

If that's what you've been looking for — let's talk.

See My Work

Sebastian Mariotti, founder of Mosto Digital, smiling outdoors near San Sebastián, Spain.

CONSEQUENCE

Proven Results

No vanity metrics. Just outcomes that matter

150%+

Improvement in return of ad spend across Programmatic & Paid Social

3x

Higher lead quality vs. prior campaigns with the same budget

850k

Impressions delivered on Connected TV and Video with full transparency

60%

Average cost savings vs. traditional agencies with bloated retainers and hidden fees.

TESTIMONIALS

Honest Marketing Real Results

Elena
VP of Growth, Hospitality Brand

"Sebastian kept us informed, grounded our strategy in reality, and helped drive real results. Our bookings went up — and we finally had clarity.!"

Sofia
Director of Communication,
Nonprofit Org

"Mosto helped us reach the right audiences and increase our monthly donations. We spent smarter and finally saw a clear path from campaign to impact."

Marcela
Co-Founder, Chocolate Company

"Mosto helped us find high-intent audiences, cut ad waste, and turn our story into real sales. We sold out two product drops in under one week."

Let's build smarter marketing, together.