How to make ServiceCallout under any given service account?

[optimism]

Hi! How to make ServiceCallout under any given service account?

I'm having private key of this service account.

thanks, 

BR, 

[dknezic · Accepted solution]

If you're wanting to call for example another Google Cloud service using a service account this gives you two options https://www.googlecloudcommunity.com/gc/Cloud-Product-Articles/Hosted-Targets-vs-Google-Cloud-Run/ta...

[optimism]

Thanks, @strebel for sharing this article, especially "Option 2: Authenticating Apigee via SA Keys". And thanks to @dknezic for pointing to this article.