Best practices for building a scalable microsite for a growing Android app?

Hey folks,

I’m working on an Android app that helps users earn small rewards by completing micro-tasks. As the user base is growing, I want to make sure our site is scalable and reliable — particularly for traffic spikes from referral campaigns.

I’m curious:
– Should I go with a static site setup or CMS-based solution?
– Any recommended stacks or CDNs for fast performance in India?
– What are some best practices for managing app traffic and user acquisition pages?

Would really appreciate insights from anyone who’s dealt with similar scaling or hosting scenarios.