Cloudy with a chance of short RTTs: Analyzing cloud connectivity in the internet

The Khang Dang, Nitinder Mohan, Lorenzo Corneo, Aleksandr Zavodovski, Jorg Ott, Jussi Kangasharju

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

22 Scopus citations


Cloud computing has seen continuous growth over the last decade. The recent rise in popularity of next-generation applications brings forth the question: "Can current cloud infrastructure support the low latency requirements of such apps?" Specifically, the interplay of wireless last-mile and investments of cloud operators in setting up direct peering agreements with ISPs globally to current cloud reachability and latency has remained largely unexplored. This paper investigates the state of end-user to cloud connectivity over wireless media through extensive measurements over six months. We leverage 115,000 wireless probes on the Speed-checker platform and 195 cloud regions from 9 well-established cloud providers. We evaluate the suitability of current cloud infrastructure to meet the needs of emerging applications and highlight various hindering pressure points. We also compare our results to a previous study over RIPE Atlas. Our key findings are: (i) the most impact on latency comes from the geographical distance to the datacenter; (ii) the choice of a measurement platform can significantly influence the results; (iii) wireless last-mile access contributes significantly to the overall latency, almost surpassing the impact of the geographical distance in many cases. We also observe that cloud providers with their own private network backbone and direct peering agreements with serving ISPs offer noticeable improvements in latency, especially in its consistency over longer distances.

Original languageEnglish
Title of host publicationIMC 2021 - Proceedings of the 2021 ACM Internet Measurement Conference
PublisherAssociation for Computing Machinery
Number of pages18
ISBN (Electronic)9781450391290
StatePublished - 2 Nov 2021
Event21st ACM Internet Measurement Conference, IMC 2021 - Virtual, Online, United States
Duration: 2 Nov 20214 Nov 2021

Publication series

NameProceedings of the ACM SIGCOMM Internet Measurement Conference, IMC


Conference21st ACM Internet Measurement Conference, IMC 2021
Country/TerritoryUnited States
CityVirtual, Online


  • cloud connectivity
  • edge computing
  • last-mile latency
  • peering


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