diff --git a/README.md b/README.md
index 9e64d49..ff86671 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,20 @@
-# doh-dot-haproxy
\ No newline at end of file
+# DOT DOH with haproxy
+```
+Query
+           Dns-over-TLS
+          --------------------->  Haproxy(Frontend)    ----------------------------->  Knot-resolver
+   Cluster                         Listen(TCP/443/853)                                 Listen(Local/dns)
+          --------------------->            (HTTP/443) -------> m13253/DOH   ------->
+	   Dns-over-HTTPS                                       Listen(Local/http)
+```
+# Server structure
+```
+    Server(or instances)
+    |
+    |----> Frontend-DOH (Haproxy 443 http TLS 1.3 strict-sni hdr/host/ ssl)
+    |           |----> DOH (m13253/dns-over-https local)
+    |                    |---------------------------------------------------------------| 
+    |----> Frontend-DOT (Haproxy 443 853 tcp TLS 1.3 strict-sni ssl_fc_sni ssl)          v
+                      |--------------------------------------------------------------> Dns Resolver (Knot-resolver dns local)
+                      
+```