I believe he meant things like using RabbitMQ instead of SQS (SQS isn't very good anyway IMHO) and things like that. More services running on plain old instances rather than AWS specific APIs, Azure specific APIs, etc.
This prevents you from getting too locked in and losing control over your application.
I honestly can't believe that Netflix can't even load their home page without DynamoDB and all this other stuff.
Edit: Looks like Netflix is back online (10:53AM EST)