Hello Agustinus, To deploy your apps, you must enable billing. Your account will not be charged if you stay within your free quota. If your application needs resources that exceed the free quota, you will be charged for the additional usage. Whether your choice of programming language falls on Go or Java, the situation does not change, and you don't attract costs when writing code; costs might be applied once you deploy your app in Standard Environment. You may check the "Managing GCP Projects, App Engine Applications, and Billing" for related detail. To directly reply to your question, App Engine Standard Environment for Go might indeed require billing at some stage, for reasons just mentioned, if you deploy your app.
The fact that billing is enabled is not to say that you'll get necessarily billed immediately. Free quota is generous, and you can deploy and test your app at your leisure using the free tier. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/1776c17f-4d5f-4825-81d3-decd100c9975%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.