It is no secret that businesses new to running in the cloud are often gut-punched by unexpected data transit charges on their monthly invoices. There are many business and technical reasons these charges, often referred to as “data egress” fees, can grow out of control.
They are called egress fees because most cloud providers charge customers for moving data out of their clouds or out of one data center and into another, including in the same region.
Cloud providers share the cost of building and operating their infrastructure with customers by charging for data egress or by bundling this cost into other services.
Some providers charge less for transit while compensating by charging more for data storage or compute services.