Pick a depth. Each prompt opens in your AI pre-loaded with the lesson. Click a row to preview the prompt.
Latency, redundancy, data sovereignty, and price all change across regions — and within a region, AZs are your unit of fault isolation. Pick the wrong region and you ship a 250ms round-trip to your users; pick a single AZ and one transformer fire takes you offline. Edge locations and CDN POPs are a separate fabric layered on top, optimized for read-heavy traffic.
Enumerate regions and zones on each cloud and measure round-trip latency from your laptop to a couple of them.
# All regions, then AZs in one
aws ec2 describe-regions --query 'Regions[*].RegionName' --output text | tr '\t' '\n' | head -10
aws ec2 describe-availability-zones --region ap-south-1 \
--query 'AvailabilityZones[*].{name:ZoneName,id:ZoneId,state:State}' \
--output table
# Latency probe — DNS-only, no auth needed
for r in us-east-1 eu-west-1 ap-south-1 ap-southeast-1; do
echo -n "$r: "
curl -s -o /dev/null -w "%{time_connect}s\n" https://ec2.$r.amazonaws.com/
done