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November 14, 2019 01:00 pm

Public Cloud Providers' Network Performance Wildly Varies

ThousandEyes, a cloud analysis company, in its second annual Cloud Performance Benchmark, has succeeded in measuring a major performance factor objectively: Public cloud providers' global network performance. ZDNet reports: In this study, ThousandEyes looked at the five major public cloud providers: Alibaba Cloud, Amazon Web Services (AWS), Google Cloud Platform (GCP), IBM Cloud, and Microsoft Azure. It did by analyzing over 320 million data points from 98 global metro locations over 30 days. This included measuring network performance from within the U.S. using multiple ISPs and global network measurements and by checking out speeds between availability zones (AZ)s and connectivity patterns between the cloud providers. Besides measuring raw speed, the company also looked at latency, jitter, and data loss. First, ThousandEyes found some cloud providers rely heavily on the public internet to transport traffic instead of their backbones. This, needless to say, impacts performance predictability. During the evening Netflix internet traffic jam, if your cloud provider relies on the internet, you will see slowdowns in the evening. So, while Google Cloud and Azure rely heavily on their private backbone networks to transport their customer traffic, AWS and Alibaba Cloud rely heavily on the public internet for the majority of transport, IBM takes a hybrid approach that varies regionally. What about AWS Global Accelerator? If you pay for this service, which puts your traffic on the AWS private backbone network, will you always see a better performance? Surprisingly, the answer's no. AWS doesn't always out-perform the internet. ThousandEyes found several cases, where the internet performs faster and more reliably than Global Accelerator -- or the results were negligible. For example, ThousandEyes discovered that from your headquarters in Seoul, you'd see a major latency improvement when accessing AWS US-East-1. That's great. But your office in San Francisco wouldn't see any improvement, while your group in Bangalore India would see a performance decrease. Generally speaking, Latin America and Asia have the highest performance variations across all clouds, whereas, in North America, cloud performance is generally comparable. You need to look at ThousandEye's detailed findings to pick out the best cloud provider on a per-region basis to ensure optimal performance. Regional performance differences can make a huge impact. Additionally, the ISP you use and whether or not you're moving traffic in or out of China also affects cloud performance. For more on the report, see ThousandEyes' website.

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