Last week, Amazon announced the end of the reserved instance, commonly known as the “RI”, with the announcement of their new replacement, “AWS Savings Plans”.

If your business depends on AWS cloud services, you’re probably familiar with the experience of having unexpected, hidden charges crop up on your monthly invoice. At times, the AWS cost structure can be quite opaque, making it difficult to accurately gauge in advance the costs of hosting a given application. One of the most common sources of unanticipated AWS charges is the service’s data transfer fees.