Process of automatically detecting devices and services on a network. Service discovery protocol (SDP) is a networking standard that accomplishes detection of networks by identifying resources.
Concept extended to SERVICES : service provider & service registry & service consumer.
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Service Discovery has the ability to locate a network automatically making it so that there is no need for a long configuration set up process.
There are 2 types of service discovery : server-side (allows client apps to find services through a router or a load balancer) & client-side (allows client apps to find services by looking through or by querying a service registry).