diff --git a/src/main/asciidoc/architectureDocumentation/architectureDocumentation.adoc b/src/main/asciidoc/architectureDocumentation/architectureDocumentation.adoc
index 6ba58c8..42de1d8 100644
--- a/src/main/asciidoc/architectureDocumentation/architectureDocumentation.adoc
+++ b/src/main/asciidoc/architectureDocumentation/architectureDocumentation.adoc
@@ -536,15 +536,16 @@
 
 . *SIT-Web-FE* - This component (SPA with Angular) provides two HTML pages: a table and a map
 with failure information. This component is in the DMZ and can be called up from the Internet.
-. *SIT-Web-Guard* - The SIT-Web-Guard (Java Spring Cloud) is a Zuul proxy
-(API gateway) that only forwards explicitly configured services. For the failure information
-tool, only certain services are available on the Internet that do not require authentication.
-Since the SIT-BE is protected by Spring Security, the SIT-Web-Guard procures guest authentication for forwarding.
+. *SIT-Web-Cache-Service* - The SIT-Web-Cache-Service is a service which receives the published
+grid failures in the form of a JSON from the SIT-BE and makes them available to the SIT-Web-FE
+via a ReST interface. This component is implemented with Angular / Typescript. Because this
+component is only equipped with freely accessible data, no security is necessary here. The
+SIT-Web-Cache-Service, like the SIT-Web-FE, is situated in the DMZ.
 . *SIT-FE* -
 This component (SPA with Angular) provides the user interface for the failure information application. The SIT-FE
 receives its authentication when it is called from the PortalFE in the form of a JWT.
 . *SIT_BE* - The SIT-BE (Java Spring Boot Microservice) provides all CRUD services in the form of
-ReST services that the two frontends require. The SIT-BE is the only component that has
+ReST services that the frontend requires. The SIT-BE is the only component that has
 access to the database. Every call is authorized against the PortalBE. This microservice also includes
 the JobManager subcomponent.
 . *JobManager* - The various imports and exports are controlled via the JobManager. The JobManager
diff --git a/src/main/asciidoc/img/architectureSIT.png b/src/main/asciidoc/img/architectureSIT.png
index 48a1d8c..1d71567 100644
--- a/src/main/asciidoc/img/architectureSIT.png
+++ b/src/main/asciidoc/img/architectureSIT.png
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