Mid-market organisations across the UK and Europe are accelerating their migration to cloud infrastructure at a pace not seen since the early pandemic era, driven by a combination of artificial intelligence adoption, cybersecurity requirements, and the growing cost of maintaining legacy on-premise systems.
New research from technology advisory firm ISG indicates that cloud migration projects among firms with revenues between £50 million and £500 million grew by 22 per cent in the first half of 2026 compared with the same period last year. The findings suggest that a segment once characterised as cautious and late-adopting is now moving decisively toward cloud-first strategies.
“The mid-market has reached an inflection point,” said Steve Hall, ISG partner and head of cloud advisory for EMEA. “Three factors are converging. First, the AI tools these firms want to deploy require cloud-native infrastructure to function effectively. Second, the cybersecurity threat landscape has become so complex that maintaining on-premise security operations is no longer viable for most. Third, the skilled engineers needed to manage legacy systems are increasingly difficult to recruit and retain.”
The research identifies financial services, professional services, and logistics as the sectors showing the most aggressive cloud adoption trajectories. In financial services, regulatory attitudes toward cloud deployment have softened considerably, with the Prudential Regulation Authority issuing updated guidance in May that removed several of the barriers that had previously kept mid-tier banks and insurers from migrating core systems.
Microsoft Azure and Amazon Web Services continue to dominate the mid-market cloud landscape, though Google Cloud has made notable inroads among firms prioritising AI and machine learning workloads. Multi-cloud strategies are becoming the norm, the ISG data shows, with 64 per cent of mid-market cloud adopters now using at least two providers.
“The multi-cloud trend is not about hedging bets,” Hall explained. “It is about matching specific workloads to the platform that handles them best. A mid-market insurer might run its claims processing on AWS, its customer-facing AI chatbot on Google Cloud, and its regulatory compliance systems on Azure. That sort of architecture would have been unthinkable for a firm of that size five years ago.”
The migration surge is creating opportunities for technology consultancies and managed service providers that specialise in mid-market cloud transitions. Several UK-based firms in this space have reported revenue growth exceeding 30 per cent year-on-year, with demand showing no signs of slowing as more organisations move from planning to execution phases of their digital transformation programmes.