Glossary

SLA (Service Level Agreement)

A Service Level Agreement is a contract between a service provider and the end user that clearly defines the level of service expected from the service provider.

SLO (Service Level Objective)

A Service Level Objective is a key element of a Service Level Agreement (SLA). It refers to the target value or range of values for a service level that is agreed upon in an SLA. The SLO is the goal that the service provider aims to achieve, measured in terms of SLIs (Service Level Indicators).

SLI (Service Level Indicator)

A Service Level Indicator is a carefully defined quantitative measure of some aspect of the level of service that is provided. They are used in Service Level Agreements and other service-based contracts to determine whether the service provider is living up to its obligations.

TTI (Time to Interactive)

Time to Interactive is a performance metric used to measure the load speed of a website or application. It refers to the point at which a webpage or app has loaded and become fully interactive, meaning all (or some important ones) of its features, like buttons and menus, are usable and responsive to user input.