The United States government agency that collects taxes and enforces the internal revenue laws.

A group of professional responders with medical skills who attend to emergencies or disasters by coming to the location of the event.

(networking) a code that identifies the network to which packets on a wireless network belong

(computing) A layer in the abstract architecture of the message system of an organization.

Service in a non-military organisation, instead of serving in the military. Service done by conscientious objector.

(Internet) A type of network computer attack that attempts to render a particular service (e.g. web site) unavailable to its audience.

A major division of the Department of Health and Human Services dedicated to promoting the public health of the United States.

plural of service set identifier

A contract between the provider of a service and a user of that service, specifying the level of service that will be provided.

plural of service level agreement