diff --git a/docs/diagrams/domain_model_frag_jetzt.png b/docs/diagrams/domain_model_frag_jetzt.png
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diff --git a/docs/diagrams/domain_model_frag_jetzt.puml b/docs/diagrams/domain_model_frag_jetzt.puml
new file mode 100644
index 0000000000000000000000000000000000000000..71b19517ab89720532ed1d804cf046ef26178a93
--- /dev/null
+++ b/docs/diagrams/domain_model_frag_jetzt.puml
@@ -0,0 +1,131 @@
+@startuml
+
+skinparam class {
+	BackgroundColor PaleGreen
+	BorderColor Green
+	ArrowColor black
+	FontSize 28
+	BackgroundColor<<USP>> Pink
+	BorderColor<<USP>> HotPink
+}
+
+skinparam backgroundColor Linen
+skinparam linetype ortho
+skinparam shadowing true
+skinparam minClassWidth 200
+skinparam LegendBackgroundColor Strategy
+skinparam LegendBorderThickness 0
+skinparam LegendFontSize 20
+skinparam defaultFontSize 20
+skinparam Padding 8
+skinparam Nodesep 150
+skinparam ArrowThickness 2
+skinparam ArrowColor DarkSlateGray
+
+hide methods
+hide empty members
+hide circle
+
+package "frag.jetzt | domain diagram" <<Frame>> {
+
+class Role {
+}
+
+class GuestUser {
+}
+
+class RegisteredUser {
+  email
+  password
+}
+
+GuestUser -left-|> Role
+RegisteredUser -up-|> Role
+
+class SessionParticipant {
+}
+
+class TemporalSessionOwner {
+}
+
+SessionParticipant -left-|> GuestUser
+TemporalSessionOwner -up-|> GuestUser
+
+class Moderator <<USP>> {
+}
+
+class BonusParticipant <<USP>> {
+}
+
+class PermanentSessionOwner {
+}
+
+PermanentSessionOwner -left-|> RegisteredUser
+Moderator -up-|> RegisteredUser
+Moderator -down- Session :assigned to >
+BonusParticipant -right-|> RegisteredUser
+
+class Session {
+  id
+  name
+  description
+  owner
+  }
+
+class Question {
+  votes
+}
+
+class Status {
+  affirmed
+  negated
+  bonus
+  discussed
+}
+
+Status -up- Question
+
+class Board {
+  help
+}
+
+class QuestionBoard {
+  counter
+  search
+  sorting
+  filtering
+  displayThreshold
+}
+
+class ModeratorBoard {
+  counter
+  search
+  sorting
+  filtering
+}
+
+Session *-right- Board
+QuestionBoard -up-|> Board
+ModeratorBoard -up-|> Board
+Question -right-o QuestionBoard
+ModeratorBoard o-down- BannedQuestion
+
+class Configuration {
+  theme
+  language
+}
+
+}
+
+legend right
+  |<img:https://git.thm.de/arsnova/arsnova-lite/raw/staging/src/assets/icons/Logo_frag_jetzt_128x128.png> |= \n\n »frag.jetzt« |
+  | Produktion | [[https://frag.jetzt]] |
+  | Repository | [[https://git.thm.de/arsnova/frag.jetzt]] |
+  | Staging Server | [[https://staging.frag.jetzt]] |
+  | UML-Tool| PlantUML v1.2019.5|
+  | Ersteller| Klaus Quibeldey-Cirkel|
+  | Mail| klaus.quibeldey-cirkel@mni.thm.de |
+  | Letzte Änderung| 26.08.2019 |
+end legend
+
+@enduml
diff --git a/docs/diagrams/use_case_diagram_frag_jetzt.png b/docs/diagrams/use_case_diagram_frag_jetzt.png
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index 0000000000000000000000000000000000000000..ffd4b752373815f6261225dd86b992388d4ed889
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diff --git a/docs/diagrams/use_case_diagram_frag_jetzt.puml b/docs/diagrams/use_case_diagram_frag_jetzt.puml
new file mode 100644
index 0000000000000000000000000000000000000000..62e9016c4c50c2118c273d9f26089ff91f89ea2e
--- /dev/null
+++ b/docs/diagrams/use_case_diagram_frag_jetzt.puml
@@ -0,0 +1,68 @@
+@startuml
+
+scale 1.0
+
+left to right direction
+
+skinparam backgroundColor Linen
+skinparam LegendBackgroundColor Strategy
+skinparam LegendBorderThickness 0
+skinparam LegendFontSize 20
+skinparam Padding 5
+skinparam defaultFontSize 24
+skinparam Nodesep 100
+skinparam ArrowThickness 2
+skinparam shadowing true
+
+skinparam usecase {
+    BackgroundColor PaleGreen
+    BorderColor Green
+    BackgroundColor<<USP>> Pink
+    BorderColor<<USP>> HotPink
+    BorderThickness 2
+    ArrowThickness 2
+    ArrowColor Green
+    ActorBorderColor Green
+}
+
+actor TemporalSessionOwner
+actor PermanentSessionOwner
+actor Participant
+actor BonusParticipant
+actor Moderator
+
+
+rectangle "frag.jetzt | use-case diagram \n" << Business >> {
+
+    TemporalSessionOwner -- (Create session)
+    PermanentSessionOwner -- (Create session)
+    (Evaluate questions) <.. (Delete question) : << extend >>
+    Participant -- (Join session)
+    BonusParticipant -- (Join session)
+    Moderator -- (Join session)
+    Moderator -- (Moderate questions)
+    (Create session) <.. (Assign moderator to session) : << extend >>
+    (Create session) <.. (Export questions) : << extend >>
+    (Create session) <.. (Ask question) : << extend >>
+    (Create session) <.. (Evaluate questions) : << extend >>
+    (Moderate questions) <.. (Ban question) : << extend >>
+    (Evaluate questions) <.. (Ban question) : << extend >>
+    (Join session) <.. (Ask question) : << extend >>
+    (Ask question) <.. (Vote down question) : << extend >>
+    (Ask question) <.. (Vote up question) : << extend >>
+
+}
+
+legend right
+  |<img:https://git.thm.de/arsnova/arsnova-lite/raw/staging/src/assets/icons/Logo_frag_jetzt_128x128.png> |= \n\n »frag.jetzt« |
+  | Produktion | [[https://frag.jetzt]] |
+  | Repository | [[https://git.thm.de/arsnova/frag.jetzt]] |
+  | Staging Server | [[https://staging.frag.jetzt]] |
+  | UML-Tool| PlantUML v1.2019.5|
+  | Ersteller| Klaus Quibeldey-Cirkel|
+  | Mail| klaus.quibeldey-cirkel@mni.thm.de |
+  | Letzte Änderung| 26.08.2019 |
+end legend
+
+@enduml
+
diff --git a/src/assets/icons/Logo_frag_jetzt_128x128.png b/src/assets/icons/Logo_frag_jetzt_128x128.png
new file mode 100644
index 0000000000000000000000000000000000000000..5a1d5223691ef572a8cb6415a59689bc3c01186e
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