Guidance
Since you selected "I would like to just run code” we recommend AWS Lambda as the best place for you to start.
What is AWS Lambda?
Why are we recommending AWS Lambda?
AWS Lambda can scale automatically from zero to hundreds of thousands of functions in real time, with built-in security postures. With AWS Lambda, you can take full advantage of building on the most trusted, reliable, and secure cloud provider as AWS Lambda manages almost all server management tasks on your behalf including hardware, software, networking and facilities management, data source integrations, and provisioning. That's why every month AWS Lambda has over a million monthly active customers who generate over 10 trillion invocations.
While this is our recommended starting point, other services could also suit your needs and you can always try a different service if your use case changes or if AWS Lambda does not seem optimal for your use case.