101 research outputs found
Hosting Industry Centralization and Consolidation
There have been growing concerns about the concentration and centralization
of Internet infrastructure. In this work, we scrutinize the hosting industry on
the Internet by using active measurements, covering 19 Top-Level Domains
(TLDs). We show how the market is heavily concentrated: 1/3 of the domains are
hosted by only 5 hosting providers, all US-based companies. For the
country-code TLDs (ccTLDs), however, hosting is primarily done by local,
national hosting providers and not by the large American cloud and content
providers. We show how shared languages (and borders) shape the hosting market
-- German hosting companies have a notable presence in Austrian and Swiss
markets, given they all share German as official language. While hosting
concentration has been relatively high and stable over the past four years, we
see that American hosting companies have been continuously increasing their
presence in the market related to high traffic, popular domains within ccTLDs
-- except for Russia, notably.Comment: to appear in IEEE/IFIP Network Operations and Management Symposium
https://noms2022.ieee-noms.org
Towards automated composition of convergent services: a survey
A convergent service is defined as a service that exploits the convergence of communication networks and at the same time takes advantage of features of the Web. Nowadays, building up a convergent service is not trivial, because although there are significant approaches that aim to automate the service composition at different levels in the Web and Telecom domains, selecting the most appropriate approach for specific case studies is complex due to the big amount of involved information and the lack of technical considerations. Thus, in this paper, we identify the relevant phases for convergent service composition and explore the existing approaches and their associated technologies for automating each phase. For each technology, the maturity and results are analysed, as well as the elements that must be considered prior to their application in real scenarios. Furthermore, we provide research directions related to the convergent service composition phases
Towards automated composition of convergent services: A survey
A convergent service is defined as a service that exploits the convergence of
communication networks and at the same time takes advantage of features of
the Web. Nowadays, building up a convergent service is not trivial, because
although there are significant approaches that aim to automate the service
composition at different levels in the Web and Telecom domains, selecting
the most appropriate approach for specific case studies is complex due to
the big amount of involved information and the lack of technical considerations.
Thus, in this paper, we identify the relevant phases for convergent
service composition and explore the existing approaches and their associated
technologies for automating each phase. For each technology, the maturity
and results are analysed, as well as the elements that must be considered
prior to their application in real scenarios. Furthermore, we provide research
directions related to the convergent service composition phases
Tangled:A Cooperative Anycast Testbed
Anycast routing is an area of studies that has been attracting interest of
several researchers in recent years. Most anycast studies conducted in the past
relied on coarse measurement data, mainly due to the lack of infrastructure
where it is possible to test and collect data at same time. In this paper we
present Tangled, an anycast test environment where researchers can run
experiments and better understand the impacts of their proposals on a global
infrastructure connected to the Internet
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