Can I use serverless functions with public apps in HubSpot?

Hi, I am new to Hubspot development. Is it possible to use serverless functions with public apps when the new platform comes out? I couldn’t find any info on this matter. Thanks!

Hi @frnkr, I hope that you are well!
Great question, thanks for asking the HubSpot Community!
I’d like to share these resources that might be useful:
- Developer platform
- Serverless functions for the CMS
- Get started with serverless functions
Now, let’s consult our Top Experts: Hi @zach_threadint, @evaldas and @Mike_Eastwood do you have suggestions to help @frnkr, please?
Thanks so much and have a lovely day!
Bérangère

Hi @frnkr,

If you are referring to the Platform v2026.03 (which is supposed to be released this year), then there is a mention that it will reintroduce serverless functions that were removed in the most recent version (v2025.2). However, for public apps, you will still need to use a third-party serverless provider (like AWS Lambda, Vercel, or Netlify) and hubspot.fetch API.