Which Amazon Web Services or Google cloud service should I use for Rest Client Based Application

I have an application which does the following:

1. In every 30 secondsa. Fetch data from an API using get requestb. perform computation on the fetched datac. If the computation leads to a specific value, do a post request on a specific signed REST endpoint and write the contents in a file.

2. Repeat the above [Point 1], 24*7, nonstop

I have tried going through the google cloud docs and AWS[Amazon Web Services] docs but I am unable to find out which google cloud service or AWS instance should I use for this kind of application. Can someone please help me here, thanks in advance.Note: I am planning to use the Free Tier for any of the google cloud or AWS.