How was your experience with Amazon DynamoDB? Does it make sense to use DynamoDB instead of MongoDB when you are on AWS?

We are going to switch to AWS and I thought instead of deploying and managing MongoDB servers ourselves can we just use DynamoDB? The team is small and there is no DBA kind of person who will manage sharding, replication etc. So, does it make sense to use a managed offering like DynamoDB instead of MongoDB in this case?