# Using an earlier CRM with Amazon S3 integration
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**Important**  
AWS Partner Central stopped accepting new requests for this type of integration in 2024. This section only applies to partners using Amazon S3.   
To get started with a new custom CRM integration, refer to the [AWS Partner Central API Reference](https://docs.aws.amazon.com/partner-central/latest/APIReference/aws-partner-central-api-reference-guide.html).

**Topics**
+ [Upgrading from a CRM with Amazon S3 integration to the Partner Central API](upgrade-crm-api.md)
+ [Configuring the connector for a CRM with Amazon S3 integration](s3-config.md)
+ [Integration resources](resources.md)
+ [Lead sharing](custom-lead-sharing.md)
+ [Opportunity sharing](custom-opportunity-sharing.md)
+ [Field mapping](custom-field-mapping.md)
+ [Creating synchronization schedules](crm-connector-scheduling.md)
+ [Best practices](best-practices.md)
+ [Quotas](quotas.md)
+ [Version history](version-history.md)
+ [FAQs](faqs.md)