# Core Concepts

### Features and Suggestion Types

In general terms, the output of our APIs is personalized food suggestions, which is why we are called Suggestic 😉. These suggestions can take many forms, such as recipe recommendations or specific dishes at nearby restaurants. 

In addition to personalized food suggestions, we provide a set of interconnected tools, like food logging and shopping lists, that leverage the same underlying personalization technology. Together, suggestions and tools can be used to create a more holistic nutrition experience.

Here's a general list of available features and suggestion types:

* Recipes
* Meal Plans
* Shopping Lists
* Restaurants, Menus, and Menu Items
* Food Logs
* Program Content and Guidance

### Personalization

Conceptually, the Suggestic platform defines personalization at 3 different levels of depth, as follows:

1. **Program (or diet)** - Represents the base rules used to generate food suggestions. i.e., Vegan Diet. 
2. **User Data** - Refers to any type of user preferences or data stream associated specifically with an individual user. i.e., food restrictions.
3. **Filters** - These can be set to further refine food suggestions. i.e., cuisine type.

![Generating a food suggestion involves all 3 levels of personalization](https://920729701-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LwqSnBDpAb6mFZYLsuB%2F-M3qcVhXb694L5gt4I01%2F-M3qcpj7ePG4YIkZ05lo%2Fimage.png?alt=media\&token=7c80ac2a-0e9d-41f6-aff2-f24409ffa229)

{% hint style="info" %}
Please note that throughout the documentation we may interchangeably use the terms diet or program.
{% endhint %}