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The client is a leader in the industry as the largest privately-held third-party administrator (TPA) in the US. They came to ITRex looking to redesign their legacy platform to increase its flexibility and scalability, and support more service offerings. The monolithic architecture of the old system resulted in a very huge code base, complex logic, high interdependency and hence complicated maintenance, hampering scalability and improvements. That way, the most reasonable option was to create an entirely new platform (both web and mobile apps for iOS and Android) using the modern microservices technology to replace the existing legacy system.