Safe low cost web services software deployments

A system, comprising:

• one or more computer processors;
• and
• a memory containing a program which when executed by the one or more computer processors, performs an operation, the operation comprising:
• installing a first service on a first virtual machine and a second service on a second virtual machine, the virtual machines configured to execute one or more services in a web services cluster;
• testing the first service on the first virtual machine and the second service on the second virtual machine to determine that the first and second services are stable;
• installing the first service and the second service on a third virtual machine configured to execute one or more services in the web services cluster;
• causing at least a portion of traffic directed to the first service and the second service to be sent to the third virtual machine;
• testing the first service and the second service on the third virtual machine;
• and
• removing the first and second virtual machines from the web services cluster upon determining that the first service and the second service executing on the third virtual machine are stable.

A computer program product, comprising:

• a computer-readable storage medium having computer-readable program code embodied therewith, the computer-readable program code comprising:
• computer-readable program code configured to install a first service on a first virtual machine and a second service on a second virtual machine, the virtual machines configured to execute one or more services in a web services cluster;
• computer-readable program code configured to test the first service on the first virtual machine and the second service on the second virtual machine to determine that the first and second services are stable;
• computer-readable program code configured to install the first service and the second service on a third virtual machine configured to execute one or more services in the web services cluster;
• computer-readable program code configured to cause at least a portion of traffic directed to the first service and the second service to be sent to the third virtual machine;
• computer-readable program code configured to test the first service and the second service on the third virtual machine;
• and
• computer-readable program code configured to remove the first and second virtual machines from the web services cluster upon determining that the first service and the second service executing on the third virtual machine are stable.