Compute instances enable you to run application code in the cloud. Each compute instance is a virtual machine that isolates you from all other customers. There are 5 compute VM sizes you can choose from (extra small, small, medium, large, extra large). You pay for compute instances on a per-hour usage basis. The pricing calculator shows the price for using 750 hours in a month. Learn more.

SQL Azure is a highly available and scalable cloud database service built on SQL Server technologies. It provides automatic patching, backup and fail-over clustering support. Learn more.

Blob storage provides a highly available way to store large amounts of unstructured data with fast read performance. You pay based on the average amount of data you store during a billing cycle and the number of read/write transactions you make to it during that period. Learn more.

All inbound data sent to Windows Azure is free. Outbound data is charged based on the total amount of data moving out of the Windows Azure datacenters via the internet in a given billing cycle. Data transfers between Windows Azure services located within the same datacenter are not subject to any charge. Learn more.

Service Bus is being offered at no charge through May 31st, 2012. After May 31st, 2012, Service Bus will be charged at the standard Pay-As-You-Go rates. You will also be charged for data transfers outside the data center where your app is provisioned. Learn more.

CDN charges are incurred for data requests it receives and for the data it transfers out to satisfy these requests. Windows Azure CDN charges will not include fees associated with transferring this data from Windows Azure Storage to CDN. Learn more.

Access Control is included in the subscription offers, as well as the Pay-As-You-Go offers. We are currently running a promotion and will provide free use of the service through December 1st, 2012. After December 1st, 2012, Access Control will be charged at the standard Pay-As-You-Go rates. Learn more.

Caching provides a distributed, in-memory, application cache service for Windows Azure applications. Caching is priced per cache size per month. Learn more.