# [Anchor](https://qdrant.tech/documentation/concepts/\#concepts) Concepts

Think of these concepts as a glossary. Each of these concepts include a link to
detailed information, usually with examples. If you’re new to AI, these concepts
can help you learn more about AI and the Qdrant approach.

## [Anchor](https://qdrant.tech/documentation/concepts/\#collections) Collections

[Collections](https://qdrant.tech/documentation/concepts/collections/) define a named set of points that you can use for your search.

## [Anchor](https://qdrant.tech/documentation/concepts/\#payload) Payload

A [Payload](https://qdrant.tech/documentation/concepts/payload/) describes information that you can store with vectors.

## [Anchor](https://qdrant.tech/documentation/concepts/\#points) Points

[Points](https://qdrant.tech/documentation/concepts/points/) are a record which consists of a vector and an optional payload.

## [Anchor](https://qdrant.tech/documentation/concepts/\#search) Search

[Search](https://qdrant.tech/documentation/concepts/search/) describes _similarity search_, which set up related objects close to each other in vector space.

## [Anchor](https://qdrant.tech/documentation/concepts/\#explore) Explore

[Explore](https://qdrant.tech/documentation/concepts/explore/) includes several APIs for exploring data in your collections.

## [Anchor](https://qdrant.tech/documentation/concepts/\#hybrid-queries) Hybrid Queries

[Hybrid Queries](https://qdrant.tech/documentation/concepts/hybrid-queries/) combines multiple queries or performs them in more than one stage.

## [Anchor](https://qdrant.tech/documentation/concepts/\#filtering) Filtering

[Filtering](https://qdrant.tech/documentation/concepts/filtering/) defines various database-style clauses, conditions, and more.

## [Anchor](https://qdrant.tech/documentation/concepts/\#optimizer) Optimizer

[Optimizer](https://qdrant.tech/documentation/concepts/optimizer/) describes options to rebuild
database structures for faster search. They include a vacuum, a merge, and an
indexing optimizer.

## [Anchor](https://qdrant.tech/documentation/concepts/\#storage) Storage

[Storage](https://qdrant.tech/documentation/concepts/storage/) describes the configuration of storage in segments, which include indexes and an ID mapper.

## [Anchor](https://qdrant.tech/documentation/concepts/\#indexing) Indexing

[Indexing](https://qdrant.tech/documentation/concepts/indexing/) lists and describes available indexes. They include payload, vector, sparse vector, and a filterable index.

## [Anchor](https://qdrant.tech/documentation/concepts/\#snapshots) Snapshots

[Snapshots](https://qdrant.tech/documentation/concepts/snapshots/) describe the backup/restore process (and more) for each node at specific times.

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