# Feature comparison
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The following table compares key features between IDC and Amazon Q Business implementations:


| Feature | IDC Implementation | Non-IDC Implementation | 
| --- | --- | --- | 
| User management | Amazon Identity Center | Amazon Quick | 
| Amazon Quick authentication methods | Identity Center Only | Native identities (username/password), Amazon Managed Microsoft AD, IAM federation | 
| Amazon Q Business authentication methods | `AWS_IAM_IDC` | `AWS_QUICKSIGHT_IDP` | 
| Share permissions | Amazon Q Business Console and Knowledge base permissions page | Amazon Quick Knowledge Base Permission page (Automatic) | 
| Index compatibility | All indexes | All indexes |