Web Summit 2025 is the world's largest technology conference, drawing over 70,000 attendees to Lisbon each November. Organised by Web Summit, the Irish technology events company that has grown into one of the most influential conference organisers globally, the event runs from 11–14 November 2025 at the Altice Arena and FIL exhibition centre in the Portuguese capital.
Web Summit has become one of the most important gatherings in the global technology calendar, transforming Lisbon into the unofficial capital of European innovation every autumn. The conference covers a vast range of topics spanning the full technology landscape, with key themes including artificial intelligence and machine learning, climate technology and pathways to sustainability, smart cities and urban technology innovation, fintech and digital payments, and the creator economy. The event brings together an extraordinary mix of participants, from early-stage start-ups and venture capitalists to Fortune 500 executives, heads of state, and global media.
Web Summit offers a distinctive set of programmes tailored to different audiences, including ALPHA and BETA stages for start-ups at various growth stages, the Investor Summit for venture capitalists and corporate investors, and dedicated media and developer tracks. The Night Summit extends the experience into Lisbon's vibrant cultural and social scene, fostering informal connections and serendipitous encounters.
This event is particularly relevant for smart city professionals, technology entrepreneurs, investors, and policymakers seeking unrivalled networking opportunities and exposure to the latest developments across the global technology ecosystem. Lisbon's combination of accessibility, affordability, and cultural richness makes it an ideal host city. Web Summit serves as an essential annual milestone for the international technology community.