# Channels and tabs

### Wording

**Member:** member in company without the tag "guest"\
**Guest:** company member with the tag "guest"\
**Channel member:** member in the channel\
**Channels types:**\
**→ Private:** Relative to a workspace but restricted to a defined group of members\
\&#xNAN;**→ Public:** Relative to a workspace anyone can find the channel and join\
\&#xNAN;**→ Direct:** Relative to a company, a discussion between a set of members but without defined topic

**To understand the routing** please read **"**Collections based rest api:" in "Wording and formating"

TODO [Wording and formatting](https://www.notion.so/Wording-and-formatting-24ef27e094a042aea4899ac6a8039dee)

### What it does

Channel component is **not** responsible of the red badge counter (notification service is).

Channel component **is** responsible of keeping track of the message from where the user need to start reading but can be override by notification service if there is a mention to start reading from.

TODO [Some process details and constant s](https://www.notion.so/Some-process-details-and-constant-s-fb5b2d4974da490aa87bb87082af8454)

### Models an APIs

[Database models](/internal-documentation/backend-services/channels-service/database-models.md)

TODO [REST Api / Websockets Api](https://www.notion.so/REST-Api-Websockets-Api-458b153a6a6e46c2925dfc1db3859d3b)

TODO [In/Out microservice](https://www.notion.so/In-Out-microservice-e721e72e542244a69ca3a913e0b405ad)

TODO [Activity models](https://www.notion.so/Activity-models-0fa3acb0a13f41fd98bc98709908eedf)


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