diff --git a/architecture.md b/architecture.md
index 978faa4..6396c5d 100644
--- a/architecture.md
+++ b/architecture.md
@@ -182,6 +182,15 @@ Considered alternatives include:
 
 - Flakes: defaults to implicitly following recursive dependencies, leaving control with the publisher.
 
+### [SelfHostBlocks](https://nlnet.nl/project/SelfHostBlocks/)
+
+SelfHostBlocks offers Nix module contracts to decouple applications from service providers, empowering user choice.
+
+Considered alternatives include:
+
+- nixpkgs-provided NixOS service modules: support far more applications, but tightly coupled with service providers, whereas we expect them to [sooner or later](https://discourse.nixos.org/t/pre-rfc-decouple-services-using-structured-typing/58257) follow suit.
+- NixOS service modules curated from scratch: would support any setup imaginable, but does not seem to align as well with our research-oriented goals.
+
 ### [OpenTofu](https://opentofu.org/)
 
 OpenTofu is the leading open-source framework for infrastructure-as-code.