# Core Concepts

Given Llama Stack's service-oriented philosophy, a few concepts and workflows arise which may not feel completely natural in the LLM landscape, especially if you are coming with a background in other frameworks.

```{include} apis.md
:start-after: ## APIs
```

```{include} api_providers.md
:start-after: ## API Providers
```

```{include} resources.md
:start-after: ## Resources
```

```{include} distributions.md
:start-after: ## Distributions
```

```{include} evaluation_concepts.md
:start-after: ## Evaluation Concepts
```