My company manages AWS using a multi-account system. I have a lambda function in account A and a DynamoDB table with a Stream enabled in account B. I want the stream events
Unfortunately, no.
From AWS docs:
"Important
You must create a DynamoDB table in the same region where you created the Lambda function. This tutorial assumes the US East (N. Virginia) region. In addition, both the table and the Lambda functions must belong to the same AWS account."
(emphasis added)
Reference: http://docs.aws.amazon.com/lambda/latest/dg/with-ddb-configure-ddb.html