diff --git a/openmetadata-spec/src/main/resources/json/schema/entity/teams/persona.json b/openmetadata-spec/src/main/resources/json/schema/entity/teams/persona.json
index 9247653ad94f..ac8d15ea4d2a 100644
--- a/openmetadata-spec/src/main/resources/json/schema/entity/teams/persona.json
+++ b/openmetadata-spec/src/main/resources/json/schema/entity/teams/persona.json
@@ -38,6 +38,10 @@
       "description": "Link to the resource corresponding to this entity.",
       "$ref": "../../type/basic.json#/definitions/href"
     },
+    "uiCustomization": {
+      "description": "Reference to the UI customization configuration.",
+      "$ref": "../../type/entityReference.json"
+    },
     "users": {
       "description": "Users that are assigned a persona.",
       "$ref": "../../type/entityReferenceList.json",
diff --git a/openmetadata-spec/src/main/resources/json/schema/system/ui/navigationItem.json b/openmetadata-spec/src/main/resources/json/schema/system/ui/navigationItem.json
new file mode 100644
index 000000000000..60bb7a44088a
--- /dev/null
+++ b/openmetadata-spec/src/main/resources/json/schema/system/ui/navigationItem.json
@@ -0,0 +1,34 @@
+{
+  "$id": "https://open-metadata.org/schema/system/ui/navigationItem.json",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "NavigationItem",
+  "description": "Defines a navigation item in the UI navigation menu.",
+  "type": "object",
+  "javaType": "org.openmetadata.schema.system.ui.NavigationItem",
+  "properties": {
+    "id": {
+      "description": "Unique identifier for the navigation item.",
+      "$ref": "../../type/basic.json#/definitions/uuid"
+    },
+    "title": {
+      "description": "Display title of the navigation item.",
+      "type": "string"
+    },
+    "pageId": {
+      "description": "Reference to a Page ID that this navigation item links to.",
+      "type": "string"
+    },
+    "order": {
+      "description": "Order of the navigation item in the menu.",
+      "type": "integer"
+    },
+    "children": {
+      "description": "Optional sub-navigation items.",
+      "type": "array",
+      "items": { "$ref": "#" },
+      "default": []
+    }
+  },
+  "required": ["id", "title", "pageId", "order"],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/openmetadata-spec/src/main/resources/json/schema/system/ui/page.json b/openmetadata-spec/src/main/resources/json/schema/system/ui/page.json
index 803050d5d88b..05424c1bb47f 100644
--- a/openmetadata-spec/src/main/resources/json/schema/system/ui/page.json
+++ b/openmetadata-spec/src/main/resources/json/schema/system/ui/page.json
@@ -41,6 +41,12 @@
       "description": "Configuration for the Knowledge Panel.",
       "type": "object"
     },
+    "tabs": {
+      "description": "Tabs included in this page.",
+      "type": "array",
+      "items": { "$ref": "tab.json" },
+      "default": []
+    },
     "persona": {
       "description": "Persona this page belongs to.",
       "$ref": "../../type/entityReference.json"
diff --git a/openmetadata-spec/src/main/resources/json/schema/system/ui/tab.json b/openmetadata-spec/src/main/resources/json/schema/system/ui/tab.json
new file mode 100644
index 000000000000..07fed7a9885b
--- /dev/null
+++ b/openmetadata-spec/src/main/resources/json/schema/system/ui/tab.json
@@ -0,0 +1,29 @@
+{
+  "$id": "https://open-metadata.org/schema/system/ui/tab.json",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tab",
+  "description": "This schema defines a Tab within a Page.",
+  "type": "object",
+  "javaType": "org.openmetadata.schema.system.ui.Tab",
+  "properties": {
+    "id": { "$ref": "../../type/basic.json#/definitions/uuid" },
+    "name": {
+      "description": "Name of the tab.",
+      "type": "string"
+    },
+    "layout": {
+      "description": "Layout configuration for this tab.",
+      "type": "object"
+    },
+    "knowledgePanels": {
+      "description": "KnowledgePanels that are part of this Tab.",
+      "$ref": "../../type/entityReferenceList.json"
+    },
+    "order": {
+      "description": "Order of the tab within the page.",
+      "type": "integer"
+    }
+  },
+  "required": ["id", "name", "layout"],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/openmetadata-spec/src/main/resources/json/schema/system/ui/uiCustomization.json b/openmetadata-spec/src/main/resources/json/schema/system/ui/uiCustomization.json
new file mode 100644
index 000000000000..bd32c3b90b4c
--- /dev/null
+++ b/openmetadata-spec/src/main/resources/json/schema/system/ui/uiCustomization.json
@@ -0,0 +1,46 @@
+{
+  "$id": "https://open-metadata.org/schema/system/ui/uiCustomization.json",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "UICustomization",
+  "description": "Contains UI customization details for a Persona.",
+  "type": "object",
+  "javaType": "org.openmetadata.schema.system.ui.UICustomization",
+  "properties": {
+    "id": { "$ref": "../../type/basic.json#/definitions/uuid" },
+    "name": {
+      "description": "A unique name for the UI customization configuration.",
+      "$ref": "../../type/basic.json#/definitions/entityName"
+    },
+    "displayName": {
+      "description": "Name used for display purposes.",
+      "type": "string"
+    },
+    "description": {
+      "description": "Description of the UI customization.",
+      "$ref": "../../type/basic.json#/definitions/markdown"
+    },
+    "pages": {
+      "description": "List of Pages in the UI customization.",
+      "type": "array",
+      "items": { "$ref": "page.json" }
+    },
+    "navigation": {
+      "description": "Site-wide navigation configuration.",
+      "type": "array",
+      "items": { "$ref": "navigationItem.json" }
+    },
+    "updatedAt": {
+      "$ref": "../../type/basic.json#/definitions/timestamp"
+    },
+    "updatedBy": { "type": "string" },
+    "version": {
+      "$ref": "../../type/entityHistory.json#/definitions/entityVersion"
+    },
+    "changeDescription": {
+      "$ref": "../../type/entityHistory.json#/definitions/changeDescription"
+    },
+    "href": { "$ref": "../../type/basic.json#/definitions/href" }
+  },
+  "required": ["id", "name", "pages"],
+  "additionalProperties": false
+}
\ No newline at end of file