Level
Key Features
Javascript across the StackJSON everywhereComponent-based UIHuge ecosystem
Application & Data
MERN Pros & Cons
Pros of MERN
Faster development and smaller learning curve
Great for single-page applications (SPAs)
Open source and free
All levels friendly (vibecoder -> pro)
Strong community and tooling
Cons of MERN
Fast-moving ecosystem (constantly changing)
Security doesn't show up by itself
Not ideal for highly relational data