t4g.medium

Analysis

The t4g.medium is a general purpose instance in the t4g series with 2 vCPUs and 4 GiB of memory on AWS Graviton2 (up to 2.5 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Running it in Mumbai instead of São Paulo saves $22.78 a month per instance: $0.0224/hour against $0.0536/hour, a 139% spread.

Nothing else with 2 vCPUs and similar memory is cheaper: among 36 current same-shape types it has the lowest on-demand price.

At $0.0336/hour on demand in US East (N. Virginia), about $24.53 a month, the t4g.medium is one of the cheaper ways to buy general purpose capacity: only 4% of the 354 current general purpose types cost less per vCPU-hour than its $0.0168.

It is size 4 of 7 in the t4g series. Stepping up to the t4g.large gives 2 vCPUs and 8 GiB for $24.53 more a month. Dropping to the t4g.small saves $12.26 a month. Unit price is not flat across the series ($0.00210 to $0.0336 per vCPU-hour), so the size changes the rate you pay.

Reserving it for a year with no upfront payment cuts the Linux rate to $0.0211/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $0.0145/hour, 57% below on demand.