ISG launches study of Guidewire services ecosystem for insurers

Information Services Group has launched a new study of the Guidewire services ecosystem, a move that puts a sharper spotlight on the firms insurers now rely on to make core modernization actually work. The report is slated for release in October 2026 and will examine providers offering consulting, platform implementation, AI accelerators and cloud-based transformation services around Guidewire.

The timing is revealing. Guidewire remains one of the most important core platforms in property and casualty insurance, but the buying decision has moved well beyond a simple software comparison. For carriers, the real test now is which partners can move data cleanly, migrate workloads to the cloud, and keep programs on schedule after go-live. That is exactly the kind of differentiation ISG is aiming to surface, with the study designed to show the strengths and weaknesses of providers in the global market.

The backdrop is a migration wave already underway. In a May 15, 2025 Provider Lens report, ISG said insurers are shifting from legacy, on-premises Guidewire implementations to modular, cloud-based deployments, and that these transitions require planning, change management and work to clear out technical debt. ISG also said Guidewire is ending support for its on-premises versions, increasing pressure on existing customers to move to SaaS.

Guidewire has been building the ecosystem around that shift. On January 10, 2025, the company said its PartnerConnect network had passed 110 cloud-based integrations in the Guidewire Marketplace. Guidewire also said its broader technology ecosystem included more than 210 solution partners and over 250 Marketplace integrations, a sign that the platform’s value now depends as much on surrounding services as on the core software itself.

The numbers behind the cloud push are also growing. Guidewire said in its fiscal 2025 results that it closed the year with 19 cloud deals in the fourth quarter and surpassed $1 billion in annual recurring revenue. Its annual report says the company was founded in 2001 and serves insurers ranging from global carriers to regional and local providers. Against that backdrop, ISG’s 2026 study arrives as a market signal: in Guidewire programs, buyers are no longer just purchasing a platform. They are scrutinizing the service wrapper that determines whether modernization delivers speed-to-value, cleaner data architecture and durable post-go-live support.