Cities around the world are being asked to do more with less. On one side, they face growing pressure to cut emissions, protect biodiversity, and create more livable urban spaces. On the other hand, digital technologies, including AI and blockchain, are rapidly transforming how cities function – from mobility and waste systems to public services and citizen engagement.

But the green and digital transformations can’t happen in silos. To solve today’s urban challenges – and unlock tomorrow’s opportunities – cities must team up with entrepreneurs, tech disruptors, and innovators.

The City Experiment Fund (CEF) is a regional United Nations Development Programme (UNDP) initiative that brings cities together to reimagine and shape sustainable urban development through strategic innovation and transformative solutions. It works with cities across Europe and Central Asia to drive sustainability, enable circular economy, improve quality of life, reshape urban systems, and foster resilience. Learn more about CEF, the cities involved, and the challenges they are addressing here.

BOOST has teamed up with CEF to launch a call for urban tech solutions that help build greener, smarter, and more resilient cities.

We are seeking tech and digitally-enabled solutions that address one or more of the following focus areas:

1. Turning Data into Green Decisions
   Solutions that turn real-time data into actionable insights for faster, fairer, and greener decisions in cities.
   
2. Engaging Residents in the Green Transition
   Solutions that motivate and reward residents to adopt sustainable lifestyles and actively participate in the green transition.
   
3. Building Green and Resilient Urban Systems
   Solutions that help reduce waste, restore ecosystems, and build resilience to climate risks.

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This isn’t just a chance to showcase your solution – it’s an opportunity to connect, pilot and scale directly with cities.

If selected, you will:

• Demo your solution during the BOOST Discovery Days (virtually) on 19-21 November 2025, presenting directly to city representatives in Europe and Central Asia.
• Be matched with cities facing real-world challenges aligned with your solution in Armenia, Kosovo, North Macedonia, Montenegro, and Ukraine.
• Receive support to forge partnerships and co-develop prototypes, pilots or projects.
• Have the chance to apply for up to US$30,000 in funding to deploy your solution in a CEF city in 2026.