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The essence of replacing an old system with a new solution is to solve problems that the old system cannot solve, or an easier and faster means of providing these solutions. Somethings to consider when replacing an old system may include:

  1. The cost of implementation 
  2.   The risk involved in the replacement process
  3. The requirements for a new system
  4. Data conversion 
  5. Consider the architectural model to use
  6. The goal of the integration 

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