Free stacks
A project built entirely on free tiers: pick a use case to see one offer per role and compare the limits.
RAG app
Answer questions over your own documents: an LLM, embeddings in a vector store, an API host and a bucket for the files.
Data warehouse
Load, model and query analytics data: a warehouse, a transformation layer and somewhere to explore it.
ML notebook
Train and try models: a notebook with a GPU, open models to call, and storage for datasets.
Web app
A full-stack side project: frontend hosting, a database, a cache and sign-in.
LLM chatbot
A chat assistant with memory: a model, a place to run it, and a store for conversations.
Cloud sandbox
Learn a hyperscaler without a bill: the sign-up credit and the always-free allowance side by side.
Offers change often; the vendor's page is the final word. Links go straight to the vendor, no affiliate links.