How do you implement pagination in DynamoDB using Node.js and the AWS SDK?

You typically implement pagination using the `LastEvaluatedKey` and `ExclusiveStartKey` parameters in DynamoDB query and scan operations. The `LastEvaluatedKey` is returned by DynamoDB when the result set is larger than the `Limit` (maximum items returned). In Node.js, you'd use the SDK's `query` or `scan` methods, passing the `LastEvaluatedKey` from the previous response as the `ExclusiveStartKey` in subsequent requests until no `LastEvaluatedKey` is returned.