It’s a Linux VPS hosting, also packed with other free stuffs like amazon S3.
The free EC2 plan includes 1 vCPU, 1 GB or RAM and 10 GB of normal HDD, not SSD.
It’s more than enough to run 3-4 wordpress blogs, could handle about 5-7k/day traffic easily, if proper caching is implemented.
I’m using this for two years now. Of course, two different accounts created
The only downside is, could be quite challenging if you’re not familiar with AWS EC2, and linux server setup, generally speaking.