Hi, yes a setting is a service and designs those services to meet the needs of its children, staff, parents, stakeholders, local community and other professional agencies.
Speech and language may operate as an agency offering their appropriate services, in a similar way that a cafe is an establishment that provides food, drink and resources as part of their service.
This thread may help further:
http://www.silkysteps.com/forum/showthread.php?t=16113
Hth, best wishes xx