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refactor: Move wiki articles to individual folders

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content/wiki/advanced/communication-networks/_index.md
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description: An overview of several network architectures commonly used by instant messaging applications.
---
There are several network architectures commonly used to relay messages between people. These networks can provide different privacy guarantees, which is why it's worth considering your [threat model](../../basics/threat-modeling.md) when deciding which app to use.
There are several network architectures commonly used to relay messages between people. These networks can provide different privacy guarantees, which is why it's worth considering your [threat model](../../basics/threat-modeling/_index.md) when deciding which app to use.
- [Recommended Instant Messengers](../../../tools/services/messengers/_index.md)
- [Video: It's time to stop using SMS](https://www.privacyguides.org/videos/2025/01/24/its-time-to-stop-using-sms-heres-why)
## Centralized Networks
![Centralized networks diagram](./network-centralized.svg)
![Centralized networks diagram](network-centralized.svg)
Centralized messengers are those where all participants are on the same server or network of servers controlled by the same organization.
@@ -34,7 +34,7 @@ Some self-hosted messengers allow you to set up your own server. Self-hosting ca
## Federated Networks
![Federated networks diagram](./network-decentralized.svg)
![Federated networks diagram](network-decentralized.svg)
Federated messengers use multiple, independent, decentralized servers that are able to talk to each other (email is one example of a federated service). Federation allows system administrators to control their own server and still be a part of the larger communications network.
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## Peer-to-Peer Networks
![P2P diagram](./network-distributed.svg)
![P2P diagram](network-distributed.svg)
P2P messengers connect to a [distributed network](https://en.wikipedia.org/wiki/Distributed_networking) of nodes to relay a message to the recipient without a third-party server.
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## Anonymous Routing
![Anonymous routing diagram](./network-anonymous-routing.svg)
![Anonymous routing diagram](network-anonymous-routing.svg)
A messenger using [anonymous routing](https://doi.org/10.1007/978-1-4419-5906-5_628) hides either the identity of the sender, the receiver, or evidence that they have been communicating. Ideally, a messenger should hide all three.