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title: Underlying Concepts
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  - Best Practices for Deployments with Large Data Volumes
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---

# Underlying Concepts

This section outlines two key concepts, multitenancy and search architecture, to explain how Salesforce:

-   Provides its application to customers’ instances and organizations
-   Keeps supported customizations secure, self contained, and high performing
-   Tracks and stores application data
-   Indexes that data to optimize searching

-   **[Multitenancy and Metadata Overview](https://developer.salesforce.com/docs/platform/salesforce-large-data-volumes-bp/guide/ldv-deployments-concepts-multitenancy-and-metadata.md)**  

-   **[Search Architecture](https://developer.salesforce.com/docs/platform/salesforce-large-data-volumes-bp/guide/ldv-deployments-concepts-search-architecture.md)**