How are large corporate entities securely giving Google Apps Script access to internal corporate network resources?

Google Workspace Developers Q&A
1

Google Apps Script runs on Google’s servers. Most corporate firewalls will block random inbound requests. That means Google Apps Script cannot connect to internal APIs or DBs.

All Google accounts across the world use the same pool of server IPs. So you can’t just whitelist the IPs cause that would allow anyone in the world to connect to the internal APIs/DBs (even if they can’t authorize to it).

Using an API proxy is a challenge because most require 2-way SSL which Google Apps Script does not support.

We’ve got thousands of folks creating numerous GAS projects. They all use the default GCP project. It would be unmanageable for our internal Google admins to create GCP projects for every user/project for them to use with their GAS project.

GAS is one of Google’s best products/services bar none. But not being able to connect to internal corporate resources is a killer. If we could solve this, it would be a game changer.

I am curious if other companies have this issue and/or how they solved it?

2

While Apps Script is now officially a core service within Google Workspace (as of June 2026), it doesn’t have enterprise-grade status relative to Google Cloud.

So for integration with internal APIs and/or DBs, you’d leverage an enterprise-grade equivalent such as Cloud Run/Cloud Run Functions.

That being said there are ways to work around some of the limitations you’ve listed…but they are not trivial to implement.

Some strategies require knowledge of GCP’s IAM and service accounts. Others involve using managed services such as Cloud Pub/Sub or Cloud Tasks. Whether these approaches are viable or not will depend on your use-case and your proficiency with not just Google Workspace, but also how adept you are with Google’s Cloud platform at large.

3

Can you explain a bit more what you mean for those two strategies? I can research but not sure what aspect of those you are referring to.