A categorisation of services based on the type of application message exchange pattern.
||An application MEP consisting of a consumer sending a request to an information service, the service then executing the request and providing a reply to the consumer.
||An application MEP consisting of a consumer sending a message to an information service without any requisite response from the information service.
||An application MEP consisting of a consumer sending a subscription request to an information service, the service then providing the consumer with means to access the subscribed information.
||An application MEP consisting of a consumer sending sequentially a message to multiple information service according to the One-Way application MEP.
||A Request/Reply application MEP requiring that the consumer wait for the information service to provide a response, and is unable to send/receive any other requests/responses until the initial response is received.
||A Request/Reply application MEP that does not restrict the consumer from completing other operations while waiting for the information service to respond.
||A Publish/Subscribe pattern whereby the information service sends necessary updates (publish) to the consumer, in accordance with the subscription.
||A Publish/Subscribe pattern whereby the information service keeps necessary updates available to the consumer, in accordance with the subscription.
||A Publish/Subscribe pattern with push mechanism introducing a layer of decoupling between the publisher and subscribers by means of a broker.