CRM Plugin: 32bits / 64 bits environment

Recently I found a post on CRM blog, most of the CRM developers develop plugin using 32 bits environment and then need to deploy to 64 bits production server. Latest SDK also included DLL for Microsoft.Crm.Sdk.dll and Microsoft.Crm.SdkTypeProxy.dll

1. If you build using platform neutral, then it should works for both 32 & 64 bits environment CRM
2. If you build using 32bits extension, then it should work on 32bits CRM only.
3. If you build using 64bits extension, then it should work on 64bits CRM only.
   

Reference from ascentium CRM blog