Datasystems or services like DynamoDB on AWS, which are not compatible or available on other platforms. Things like Security Groups can be another one, they do

Datasystems or services like DynamoDB on AWS, which are not compatible or available on other platforms. Things like Security Groups can be another one, they don’t necessarily translate directly to what you’ll find on other platforms. You don’t mention what clouds you’re evaluating, but avoiding services that aren’t available elsewhere or at least don’t have wire compatibility with those available elsewhere would be my recommendation. ex. AWS Kafka over SQS or Kinesis.