1. Changes in apps being used: https://www.nytimes.com/interactive/2020/04/07/technology/coronavirus-internet-use.html Won't discuss this too much; instead will focus on the infrastructure itself. --> Use of online chat apps --> Games --> Netflix --> Duo, etc. 2. The Internet and cloud computing is incredibly elastic: (https://www.fastly.com/blog/how-covid-19-is-affecting-internet-performance) --> Elasticity both on the supply and the demand side. --> Supply side: been provisioned for a rainy day (slashdot effect or flashcrowd) or for the worst case during the day/week. --> Cloud computing has also helped with technology such as auto scaling. --> As a result, there's more capacity than required at any time. --> Demand side: Also, things like adaptive bitrate algorithms, degraded quality images, compressed images, progressive loading, degrading video quality, e.g., YouTube reducing video quality in Europe. (https://www.bbc.com/news/technology-51968302) (https://www.bloomberg.com/news/articles/2020-03-19/netflix-to-cut-streaming-traffic-in-europe-to-relieve-networks) --> Aside: in many scenarios in the US where network capacity is plentiful, it's computation rather than networking that's limiting video performance. --> The Internet is inherently adaptive unlike the phone lines. --> However: Spikes still happen from time to time (e.g., Amazon prime day outage in 2018), but in general there's considerably more excess capacity available. --> In other words, the Internet is becoming a fairly reliable piece of infrastructure (like electricity or the water supply) rather than an esoteric research curiosity. 3. Many innovations over the years have helped the Internet scale (https://www.fastly.com/blog/four-key-innovations-that-prepared-the-internet-for-covid-19) --> Better congestion control --> CDNs --> Cloud computing --> Better codecs, image compression, etc. --> Better transport --> Effects seem to be regional due to the distributed nature of the Internet. 4. COVID causing a flattening of the network utilization where the peaks and troughs aren't that different. --> Also unlike physical infrastructure like cars, more use doesn't cause wear and tear. (although some optic fibre cables might show signs of age.) --> At least not compared to the time scales at which this infrastructure is replaced (every few years). (https://www.vox.com/recode/2020/3/25/21188391/internet-surge-traffic-coronavirus-pandemic) 5. Latency vs. throughput --> Latency is still an issue with video conferencing etc. Packets being stuck in a queue. --> A lot of other applications are throughput sensitive: Netflix, even web page loads. https://www.vox.com/recode/2020/3/25/21188391/internet-surge-traffic-coronavirus-pandemic 6. Fixing video conferencing remains key --> Because this is one case where the *content* can not simply be brought closer to the user. --> Unlike how content can be brought closer to the user in the case of video streaming, web browsing, etc. --> But, even here, dedicated fiber infrastructure has been helpful with video conferencing: private leased lines between company datacenters, relays in the cloud (e.g., Zoom plus recent spill over to Oracle). https://techcrunch.com/2020/04/28/in-surprise-choice-zoom-hitches-wagon-to-oracle-for-growing-infrastructure-needs/ 7. Other non-technical problems with COVID-19 on the Internet: --> Information overload (infodemic) with false information etc. (https://www.hcde.washington.edu/news/surviving-the-coronavirus-infodemic-discussion-with-hcde-associate-professor-kate-starbird) --> Phishing attempts that target people's fears about covid. https://blogs.akamai.com/2020/04/covid-19-phishing-exploiting-a-global-pandemic.html 8. Digital divide (https://www.fastly.com/blog/digital-divide) --> COVID still impacting low income communities. --> Raising the floor of Internet bandwidth (as comcast recently did) has been helpful. "ISPs can, and have, made a difference." Similarly, Cox communications (https://newsroom.cox.com/cox_internet_changes_to_assist_students_-_remote_workers) --> Internet performance seems to be correlated with income levels. --> And some regions (e.g., Italy, UK) seem to be faring worse than others (e.g., Japan) Internet wise. (https://www.fastly.com/blog/how-covid-19-is-affecting-internet-performance) 9. Going forward: Everything moving online --> The rise of cloud computing --> The decline of physical computing and physical stores. --> More concentration of computing power in the hands of a few cloud providers. 10. Going forward: Fixing access in developing regions remains important --> 5G might play a role here; avoids the cost of laying down fibre. --> Mobile is the primary/only means of Internet access for a large chunk of the developing world, given that there is limited wired infrastructure. --> Even in the developed world, last mile WiFi access problems persist (e.g., too many people in a room) (https://arstechnica.com/gadgets/2020/04/remote-work-lagging-if-you-cant-plug-it-in-upgrade-to-mesh/)