30mS for a website is a tough bar to clear considering Speed of Light (or rather electrons in copper / light in fiber)
https://en.wikipedia.org/wiki/Speed_of_light
Just as an example, round trip delay from where I rent to the local backbone is about 14mS alone, and the average for a webserver is 53mS. Just as a simple echo reply. (I picked it because I'd hoped that was in Redmond or some nearby datacenter, but it looks more likely to be in a cheaper labor area.)
However it's only the bloated ECMAScript (javascript) trash web of today that makes a website take longer than ~1 second to load on a modern PC. Plain old HTML, images on a reasonable diet, and some script elements only for interactive things can scream.
mtr -bzw microsoft.com
6. AS7922 be-36131-cs03.seattle.wa.ibone.comcast.net (2001:558:3:942::1) 0.0% 10 12.9 13.9 11.5 18.7 2.6
7. AS7922 be-2311-pe11.seattle.wa.ibone.comcast.net (2001:558:3:3a::2) 0.0% 10 11.8 13.3 10.6 17.2 2.4
8. AS7922 2001:559:0:80::101e 0.0% 10 15.2 20.7 10.7 60.0 17.3
9. AS8075 ae25-0.icr02.mwh01.ntwk.msn.net (2a01:111:2000:2:8000::b9a) 0.0% 10 41.1 23.7 14.8 41.9 10.4
10. AS8075 be140.ibr03.mwh01.ntwk.msn.net (2603:1060:0:12::f18e) 0.0% 10 53.1 53.1 50.2 57.4 2.1
11. AS8075 2603:1060:0:10::f536 0.0% 10 82.1 55.7 50.5 82.1 9.7
12. AS8075 2603:1060:0:10::f3b1 0.0% 10 54.4 96.6 50.4 147.4 32.5
13. AS8075 2603:1060:0:10::f51a 0.0% 10 49.7 55.3 49.7 78.4 8.3
14. AS8075 2a01:111:201:f200::d9d 0.0% 10 52.7 53.2 50.2 58.1 2.7
15. AS8075 2a01:111:2000:6::4a51 0.0% 10 49.4 51.6 49.4 54.1 1.7
20. AS8075 2603:1030:b:3::152 0.0% 10 50.7 53.4 49.2 60.7 4.2
In the cloud era this gets a bit better but my last job I removed a single service that was adding 30ms to response time and replaced it with a consul lookup with a watch on it. It wasn’t even a big service. Same DC, very simple graph query with a very small response. You can burn through 30 ms without half trying.