Describe the given business model using one sentence.
Freemium
Freemium is a business model that offers a basic version of a product or service for free, while charging for premium features or functionality.
Complete the following task based on the instruction and optional input provided.### Instruction:
Describe the given business model using one sentence.

### Input:
Freemium

### Output:
Freemium is a business model that offers a basic version of a product or service for free, while charging for premium features or functionality.