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🌐 '''Oasis Loss Modelling Framework''' is an open-source platform designed to standardize and democratize [[Definition:Catastrophe modeling | catastrophe modeling]] for the insurance and [[Definition:Reinsurance | reinsurance]] industry. Developed by the Oasis Loss Modelling Framework Ltd., a not-for-profit entity backed by a consortium of insurers, reinsurers, brokers, and academic institutions, it provides a common computational engine through which multiple vendor and proprietary catastrophe models can be run on a consistent basis. In an industry historically dominated by a small number of commercial model providers — chiefly [[Definition:Moody's RMS | RMS]], [[Definition:Verisk | AIR Worldwide]], and CoreLogic — Oasis was conceived to introduce greater transparency, competition, and flexibility into the way the market quantifies natural catastrophe and other large-scale risks.

⚙️ The framework operates as a modular system with three core components: the hazard module (which generates event sets and intensity footprints for perils such as windstorm, earthquake, or flood), the vulnerability module (which translates hazard intensity into damage estimates for exposed assets), and the financial module (which applies [[Definition:Insurance policy | policy]] terms, [[Definition:Deductible | deductibles]], and [[Definition:Reinsurance | reinsurance]] structures to produce loss outputs). Model developers can plug their own scientific content into the Oasis kernel without having to build an end-to-end platform from scratch, while (re)insurers and [[Definition:Insurance broker | brokers]] can run multiple models through a single interface, facilitating model comparison and blending. This architecture has attracted interest across global markets — from [[Definition:Lloyd's of London | Lloyd's]] participants seeking to meet the Lloyd's Catastrophe Model Governance standards, to regulators and development agencies looking to build catastrophe risk models for emerging markets in Southeast Asia, the Caribbean, and Sub-Saharan Africa where commercial models have historically offered limited coverage.

💡 Oasis matters because concentration of catastrophe modeling capability in a few proprietary vendors has long raised concerns about model risk, lack of transparency, and barriers to entry for smaller (re)insurers and developing-market regulators. By offering an open standard, Oasis enables actuaries and risk engineers to inspect, challenge, and customize the assumptions underlying their [[Definition:Probable maximum loss (PML) | probable maximum loss]] estimates and [[Definition:Aggregate exceedance probability (AEP) | exceedance probability curves]] — a level of scrutiny that closed-source models do not always permit. The framework has also become a vehicle for incorporating emerging perils, including [[Definition:Climate risk | climate change]] scenarios and pandemic risk, where academic and governmental research can be rapidly translated into model-ready formats. For the broader industry, Oasis represents a structural shift toward collaborative, transparent risk quantification that complements rather than replaces commercial models.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Catastrophe modeling]]
* [[Definition:Probable maximum loss (PML)]]
* [[Definition:Reinsurance]]
* [[Definition:Climate risk]]
* [[Definition:Exposure management]]
* [[Definition:Lloyd's of London]]
{{Div col end}}

Definition:Oasis Loss Modelling Framework - Revision history

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