diff --git a/book/integration-service.md b/book/integration-service.md
index 3c5a115f..411e7b61 100644
--- a/book/integration-service.md
+++ b/book/integration-service.md
@@ -205,6 +205,22 @@ The Integration service needs secrets mounted so that the `Environment Provision
 16. Repeat step 10
 17. Repeat step 11-13
 
+### Image extraction details
+
+Integration service is getting specific information about the image that's being built by the RHTAP build pipeline by parsing the expected Tekton results for the pipeline. All of them are required to be present in order to correctly construct a Snapshot.
+
+<ins>Results are following:</ins>
+ - IMAGE_URL
+    - Represents image repository where the built image was pushed. Used to construct the component image reference.
+ - IMAGE_DIGEST
+    - Digest of the image that was built. Used to construct the component image reference.
+ - CHAINS-GIT_URL
+    - Git url of the source repository. Added to the source section of the component within the Snapshot.
+ - CHAINS-GIT_COMMIT
+    - The precise commit SHA that was fetched by git-clone task. Added to the source section of the component within the Snapshot.
+
+>All those results contributes to a snapshot preparation for a pipelinerun
+
 
 ## Appendix