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# Overview

> Overview of writing data through Merge. Links to guides on POST/PATCH requests, the /meta endpoint, related writes, nested writes, and conditional fields.

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## Your Journey to Writes

For convenience, we've broken up the journey of learning how to write data to third-party platforms into Basic and Advanced topics.

### Basic Writes

In our Basic topics, we introduce universal concepts that allow you to execute writes for **most** — but not all — third-party platforms and Linked Accounts.

#### [Making Writes](/merge-unified/writing-data/writes/introduction)

Make POST requests to Merge to write data to third-party platforms

#### [Related and Nested Objects](/merge-unified/writing-data/writes/nested)

Write data to third-party platforms with relations to existing and new Common Model instances

> **Note**
>
> Writes are unified across all of our third-party platforms. However, some platforms require an additional piece of Merge's advanced functionality — explored in **Advanced Writes** below — to support them.

### Advanced Writes

In our Advanced topics, we introduce programmatic concepts that make heavy use of an endpoint we call `/meta` to handle writes for **all** third-party platforms and Linked Accounts.

#### [Programmatic writes with /meta](/merge-unified/writing-data/programmatic-writes-with-meta/introduction)

Use /meta to programmatically form and validate POST requests to write standardized or integration / Linked Account-specific model fields

#### [Programmatic nested writes with /meta](/merge-unified/writing-data/programmatic-writes-with-meta/nested)

Use /meta to create related Common Model instances (through nesting) with standardized or integration / Linked Account-specific fields

#### [Templates and conditional fields](/merge-unified/writing-data/programmatic-writes-with-meta/templates-and-conditional-fields)

Use /meta to determine which specific model fields are available based on your user's input in another field