diff --git a/docs/herddb.graphml b/docs/herddb.graphml
new file mode 100644
index 000000000..41c66f5f6
--- /dev/null
+++ b/docs/herddb.graphml
@@ -0,0 +1,397 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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+  <!--Created by yEd 3.14.4-->
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+  <key attr.name="description" attr.type="string" for="node" id="d5"/>
+  <key for="node" id="d6" yfiles.type="nodegraphics"/>
+  <key for="graphml" id="d7" yfiles.type="resources"/>
+  <key attr.name="url" attr.type="string" for="edge" id="d8"/>
+  <key attr.name="description" attr.type="string" for="edge" id="d9"/>
+  <key for="edge" id="d10" yfiles.type="edgegraphics"/>
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+              <y:SmartNodeLabelModel distance="4.0"/>
+            </y:LabelModel>
+            <y:ModelParameter>
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+            </y:ModelParameter>
+          </y:NodeLabel>
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+    </node>
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+          <y:Fill color="#FF9900" transparent="false"/>
+          <y:BorderStyle hasColor="false" type="line" width="1.0"/>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="12" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="17.96875" modelName="custom" textColor="#000000" visible="true" width="108.677734375" x="116.4111328125" y="23.515625">Native API clients<y:LabelModel>
+              <y:SmartNodeLabelModel distance="4.0"/>
+            </y:LabelModel>
+            <y:ModelParameter>
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+          </y:NodeLabel>
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+          <y:BorderStyle hasColor="false" type="line" width="1.0"/>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="12" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="73.84375" modelName="custom" textColor="#000000" visible="true" width="80.892578125" x="17.0537109375" y="85.078125">ZooKeeper
+Coordination
+and
+Metadata
+Storage<y:LabelModel>
+              <y:SmartNodeLabelModel distance="4.0"/>
+            </y:LabelModel>
+            <y:ModelParameter>
+              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="0.0" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
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+          </y:NodeLabel>
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+          <y:Fill color="#FFFF00" transparent="false"/>
+          <y:BorderStyle hasColor="false" type="line" width="1.0"/>
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+Node<y:LabelModel>
+              <y:SmartNodeLabelModel distance="4.0"/>
+            </y:LabelModel>
+            <y:ModelParameter>
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+          <y:Fill color="#FFFF00" transparent="false"/>
+          <y:BorderStyle hasColor="false" type="line" width="1.0"/>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="12" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="31.9375" modelName="custom" textColor="#000000" visible="true" width="50.4296875" x="56.28515625" y="79.03125">HerdDB
+Node<y:LabelModel>
+              <y:SmartNodeLabelModel distance="4.0"/>
+            </y:LabelModel>
+            <y:ModelParameter>
+              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="0.0" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
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+          </y:NodeLabel>
+        </y:GenericNode>
+      </data>
+    </node>
+    <node id="n5">
+      <data key="d6">
+        <y:GenericNode configuration="BevelNode2">
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+          <y:Fill color="#FFFF00" transparent="false"/>
+          <y:BorderStyle hasColor="false" type="line" width="1.0"/>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="12" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="31.9375" modelName="custom" textColor="#000000" visible="true" width="50.4296875" x="56.28515625" y="79.03125">HerdDB
+Node<y:LabelModel>
+              <y:SmartNodeLabelModel distance="4.0"/>
+            </y:LabelModel>
+            <y:ModelParameter>
+              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="0.0" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
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+          </y:NodeLabel>
+        </y:GenericNode>
+      </data>
+    </node>
+    <node id="n6">
+      <data key="d6">
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+          <y:Fill color="#FFFF00" transparent="false"/>
+          <y:BorderStyle hasColor="false" type="line" width="1.0"/>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="12" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="31.9375" modelName="custom" textColor="#000000" visible="true" width="50.4296875" x="56.28515625" y="79.03125">HerdDB
+Node<y:LabelModel>
+              <y:SmartNodeLabelModel distance="4.0"/>
+            </y:LabelModel>
+            <y:ModelParameter>
+              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="0.0" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
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+          </y:NodeLabel>
+        </y:GenericNode>
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+    </node>
+    <node id="n7">
+      <data key="d6">
+        <y:SVGNode>
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+          <y:Fill color="#CCCCFF" transparent="false"/>
+          <y:BorderStyle color="#000000" type="line" width="1.0"/>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="12" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="31.9375" modelName="custom" textColor="#000000" visible="true" width="67.78515625" x="3.232421875" y="92.61299896240234">Local copy
+of data<y:LabelModel>
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+            </y:LabelModel>
+            <y:ModelParameter>
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+          </y:NodeLabel>
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+          </y:NodeLabel>
+          <y:SVGNodeProperties usingVisualBounds="true"/>
+          <y:SVGModel svgBoundsPolicy="0">
+            <y:SVGContent refid="1"/>
+          </y:SVGModel>
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+    <node id="n10">
+      <data key="d6">
+        <y:SVGNode>
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+of data<y:LabelModel>
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+server on
+Apache BookKeeper<y:LabelModel>
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+            <y:ModelParameter>
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+server on
+Apache BookKeeper<y:LabelModel>
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+            </y:LabelModel>
+            <y:ModelParameter>
+              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="0.0" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
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+server on
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+            </y:LabelModel>
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diff --git a/docs/herddb.png b/docs/herddb.png
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diff --git a/herddb-website/src/site/markdown/index.md b/herddb-website/src/site/markdown/index.md
index 4a2f98882..51266081f 100644
--- a/herddb-website/src/site/markdown/index.md
+++ b/herddb-website/src/site/markdown/index.md
@@ -64,6 +64,8 @@ Indexes are supported by using an implementation of the Block Range Index patter
 
 The database can be accessed from outside the process by using TLS and authentication is performed using SASL with Kerberos.
 
+![Architecture](images/herddb.png)
+
 <h2>The write path</h2>
 
 The most critical path for data access in HerdDB is the *write path*, in particular the INSERT and the UPDATE-by-PK data manipulation statements are the most important for us, together with the GET-by-PK.
diff --git a/herddb-website/src/site/resources/images/herddb.png b/herddb-website/src/site/resources/images/herddb.png
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