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In the world of core P&C systems the most common approach to modernization has historically been the ‘big bang’ replacement. The goal was to replace the entire legacy system in one aggressive move and one large project in the hopes of solving all of the legacy woes. While the intentions were good, the results weren’t always as expected. The gap between the objective and reality has too often left the project in ruins and sponsors licking their wounds.

Similar to the young, green behind the ears, hot-shot professional on the fast track to replace the seasoned veteran, a major drawback of the big bang implementation mindset is underestimation of the number of years of knowledge and process nuances that have been built into the incumbent system. For example, the exception to the rule that is typically specific to a jurisdiction and data combination is often not even considered during the new system implementation since the exception was identified and implemented long ago, most likely never documented, and forgotten over time. Multiply the one exception to the rule by years of exceptions and the legacy replacement project just got a lot more complicated.

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