About Community Stack

Building the next generation of social infrastructure

Community Stack is building the next generation of social infrastructure by operating, supporting, and connecting communities, ecosystems, and shared platforms under a stewardship-led, portfolio-operator mindset, strengthening trust, resilience, and long-term ecosystem value.

Our Foundation

The principles that guide everything we build and operate.

Vision

Communities as Infrastructure

To help communities become a recognised, enduring, and investable layer of global infrastructure, trusted, discoverable, and capable of shaping meaningful progress across society.

Mission

Stewardship & Growth

To build, support, and operate a growing portfolio of communities, ecosystems, and shared infrastructure, strengthening them through stewardship, thoughtful governance, and long-term responsible growth.

What We Do

Ecosystem Operation

Community Stack develops and operates the platforms, standards, and operating models that transform fragmented groups into connected, resilient ecosystems.

Portfolio Operator Model

We operate communities like infrastructure and invest in their longevity.

Community Stack is structured as a stewardship-led portfolio operator. We acquire, support, and strengthen communities and ecosystem assets,  reinvesting into quality, resilience, governance, and long-term compounding value.

We don't optimise for short-term output. We build durable infrastructure that communities, partners, and institutions can rely on over time.

Stewardship-led ownership

Long-term care, continuity, and credibility — protecting local identity and practitioner leadership.

Reinvestment loop

Revenue is reinvested into operational support, ecosystem growth, accessibility, and shared infrastructure.

Shared infrastructure at scale

Standards, operations, and systems that make communities more resilient without erasing what makes them unique.

Responsible portfolio growth (including M&A)

Selective acquisitions, partnerships, and integrations that strengthen ecosystem health and reduce fragility.

Meet the Founders

Ethan Sumner

Ethan Sumner

Co-Founder & CEO

Community organiser and technologist from Barnsley

Ethan's journey began with a simple mission: helping early-career professionals find their place in tech. What started as Young DevOps evolved into a national network of communities and events. His professional experience spans Microsoft, Mastercard, and leading consultancies, where he witnessed firsthand how technology can transform lives, and how digital exclusion can leave entire communities behind.

Mercedes Moxon Greenfield

Mercedes Moxon Greenfield

Co-Founder & CTO

UK Robotics Champion, accessibility advocate, and volunteer from Sheffield

Mercedes brings a unique combination of technical excellence and grassroots community understanding that shapes Community Stack's product and platform design. As a UK Robotics Champion with international competition experience, she believes the most elegant technical solution means nothing if real people can't use it.

"Accessibility isn't about ticking boxes or meeting legal requirements. It's about understanding that the people who most need community support are often the same people who get excluded by complicated technology."

Timeline

From grassroots communities to social infrastructure

Community Stack was built through years of operating real communities — learning what makes ecosystems thrive, what makes them fragile, and what infrastructure is missing.

May 2025

Community Stack launches

We officially launched Community Stack to operate communities and ecosystems as long-term social infrastructure.

July 2025

Mercedes joins as CTO

We appointed Mercedes Moxon Greenfield as CTO to lead accessibility-first, inclusion-led platform delivery.

August 2025

Switchboard announced publicly

We announced Community Switchboard to help charities and community organisations become visible, accessible, and easier to support.

December 2025

Acquired CPE London

We acquired Cloud Platform Engineering London from Appvia, expanding our DevOps & Platform ecosystem in the capital.

February 2026

Community Engine launches

We launched Community Engine as the trust layer and verification infrastructure underpinning the wider portfolio.

Strategic Aims

Six objectives guiding our long-term mission.

Operating Principles

The values that guide how we work.

Infrastructure-first

We build for the long term, not the short term.

Stewardship before scale

We prioritise ecosystem health over growth metrics.

Trust by design

We embed legitimacy and transparency into everything we build.

Global vision, local agency

We scale infrastructure while preserving local identity and autonomy.

Impact over activity

We measure success by outcomes, not outputs.

Open where possible, responsible where necessary

We default to openness while protecting community trust.

Our Story

Community Stack was born out of years spent organising grassroots meetups, user groups, and community gatherings across Yorkshire and beyond. Through hundreds of events, we saw first-hand how powerful communities can be, helping people build confidence, find opportunity, develop skills, and feel part of something bigger than themselves.

But we also saw the fragility behind the success. Some communities thrived with strong networks, funding, and awareness, while others doing equally meaningful work struggled with visibility, resources, and long-term sustainability.

That imbalance shaped our belief that communities aren't just social spaces, they are infrastructure. And like any infrastructure, they need support, continuity, and shared systems if they are going to endure.

Community Stack was created to help build that infrastructure.

Why Our Pillars Matter

The infrastructure we're building to support communities at scale.

Discovery Layer

Why Switchboard Matters

Switchboard grew from a simple but important insight: access shouldn't depend on whether someone happens to be online, on social media, or plugged into the right network.

The name honours the generations of telephone switchboard operators who understood that connection is infrastructure.

Because participation should never be determined by digital access alone.

Trust Layer

Engine: Trust, Standards, Legitimacy

Through our work operating communities, we saw the need for a clear, credible framework that helps communities engage safely and professionally with partners and institutions.

Engine was created as that layer of trust, not to control communities, but to protect and strengthen them.

Engine exists so ecosystems can collaborate with confidence.

A movement as much as a platform

Community Stack has never been about building a single product or platform, it has always been about building capacity, resilience, and shared infrastructure across ecosystems.

Our work is grounded in a simple belief: Communities already function as social infrastructure, they haven't always been recognised, supported, or sustained as such.

This is not a short-term initiative. It is a stewardship-led effort to strengthen the foundations that so many people, organisations, and futures already depend on.

Get involved

Whether you lead a community, represent an organisation, or want to support ecosystems responsibly,  we'd love to connect.