Great question.
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We aim for 120 days from Day 1. Now that does not mean the integration is complete, but it does mean that the key elements of the post-merger integration has been assigned to the proper teams, and the post-merger integration elements are now really “business as usual”.
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Key areas of culture, communication, employee benefits & payroll, training, etc. area all taken care of. The integration is now in a specialized state.
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For example, as a technology company we have a lot of R&D in our acquisitions. Within 120 days, we have aligned all R&D people to our spectrum of talent, and they have been trained on expectations and growth paths in our company. There will still be a lot of R&D integration work to do, but the primary people integration elements are complete.
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The complete integration would appear to be 2-4 years for us, depending on the size of the acquistion. We are only in our 3rd of integration and have performed 4 acquisitions in that period of time.