o:33362 Towards a Seamless Coordination of Cloud and Fog: Illustration through the Internet-of-Things en Abstract: With the increasing popularity of the Internet-of-Things (IoT), organizations are revisiting their practices as well as adopting new ones so they can deal with an ever-growing amount of sensed and actuated data that IoT-compliant things generate. Some of these practices are about the use of cloud and/or fog computing. The former promotes“anything-as-aservice” and the latter promotes “process data next to where it is located”. Generally presented as competing models, this paper discusses how cloud and fog could work hand-in-hand through a seamless coordination of their respective “duties”. This coordination stresses out the importance of defining where the data of things should be sent (either cloud, fog, or cloud&fog concurrently) and in what order (either cloud then fog, fog then cloud, or fog&cloud concurrently). Applications’ concerns with data such as latency, sensitivity, and freshness dictate both the appropriate recipients and the appropriate orders. For validation purposes, a healthcaredriven IoT application along with an in-house testbed, that features real sensors and fog and cloud platforms, have permitted to carry out different experiments that demonstrate the technical feasibility of the coordination model. Keywords: Cloud, Coordination, Fog, Healthcare, Internet-of-Things. 1552099 10.1145/3297280.3297477 2024-04-03T07:57:06.012Z 44 no 46 Zakaria Maamar 0000-0003-4462-8337 Thar Baker person 0000-0002-5166-4873 Noura Faci person 0000-0001-7428-6302 Emir Ugljanin Državni univerzitet u Novom Pazaru person 104999689 104999689 Mohammed Al Khafajiy person 0000-0001-6561-0414 Vanilson Burégio person 0000-0001-5122-6075 application/pdf 2101258 https://phaidrabg.bg.ac.rs/o:33362 no yes 1 70 92000001 20A01 SAC '19: Proceedings of the 34th ACM/SIGAPP Symposium on Applied Computing 2008 2015 2019