"1 vCPU" is arbitrary unit, you can run as many vCPUs on physical CPUs as you want. AWS Lambda gives you ~1/14th CPU as a "vCPU" on minimum (128MB config), t3.n

"1 vCPU" is arbitrary unit, you can run as many vCPUs on physical CPUs as you want. AWS Lambda gives you ~1/14th CPU as a "vCPU" on minimum (128MB config), t3.nano has "5% baseline performance/vCPU". So VMs do not need to be expensive.