SLOs and SLAs
Thursday, February 04, 2010
4:57 PM
A measure of scaling: SLOs and SLAs
Service-level objectives (SLOs) express response time goals for a service, i.e., the time between making a request and receiving a response. 
Service-level agreements (SLAs) are legal documents describing the scope and consequences of expectations for a service
An SLO describes what is desirable; an SLA describes penalties for not meeting expectations! 