diff --git a/visualization_ui/js/ui.js b/visualization_ui/js/ui.js
new file mode 100644
index 0000000..d2f817d
--- /dev/null
+++ b/visualization_ui/js/ui.js
@@ -0,0 +1,100 @@
+/**
+ * UI Rendering Module for Visualization UI
+ * Handles rendering of Alerts table and Outlier summary panel.
+ *
+ * @module ui
+ */
+
+/**
+ * Renders the Max-only alert data into a table structure within #alert-dashboard.
+ * @param {Array<Object>} alerts - Array of alert objects from /alert-data endpoint.
+ */
+export function renderAlertDashboard(alerts = []) {
+  const container = document.getElementById('alert-dashboard');
+  if (!container) return;
+
+  container.innerHTML = '';
+  const status = document.createElement('div');
+  status.className = 'visualization_ui__status';
+
+  if (!Array.isArray(alerts) || alerts.length === 0) {
+    status.textContent = 'Keine Alert-Daten vorhanden.';
+    container.appendChild(status);
+    return;
+  }
+
+  const table = document.createElement('table');
+  table.className = 'visualization_ui__table';
+
+  const thead = document.createElement('thead');
+  thead.innerHTML = `
+    <tr>
+      <th>corr_id</th>
+      <th>stratum</th>
+      <th>expires_at_dist_hours</th>
+      <th>retry_total_overhead_ms</th>
+    </tr>
+  `;
+  table.appendChild(thead);
+
+  const tbody = document.createElement('tbody');
+  for (const alert of alerts) {
+    const row = document.createElement('tr');
+    row.innerHTML = `
+      <td>${escapeHTML(alert.corr_id ?? '')}</td>
+      <td>${escapeHTML(alert.stratum ?? '')}</td>
+      <td>${escapeHTML(alert.expires_at_dist_hours ?? '')}</td>
+      <td>${escapeHTML(alert.retry_total_overhead_ms ?? '')}</td>
+    `;
+    tbody.appendChild(row);
+  }
+
+  table.appendChild(tbody);
+  container.appendChild(table);
+}
+
+/**
+ * Displays outlier analysis summary metrics inside #outlier-summary panel.
+ * @param {Object} report - Report object fetched from /outlier-report endpoint.
+ */
+export function renderOutlierSummary(report = {}) {
+  const container = document.getElementById('outlier-summary');
+  if (!container) return;
+  container.innerHTML = '';
+
+  const summary = document.createElement('div');
+  summary.className = 'visualization_ui__outlier-summary';
+
+  if (!Object.keys(report).length) {
+    summary.textContent = 'Noch keine Outlier-Daten verfügbar.';
+    container.appendChild(summary);
+    return;
+  }
+
+  const list = document.createElement('dl');
+  for (const [key, value] of Object.entries(report)) {
+    const term = document.createElement('dt');
+    term.textContent = key;
+    const desc = document.createElement('dd');
+    desc.textContent = typeof value === 'number' ? value.toFixed(3) : String(value);
+    list.appendChild(term);
+    list.appendChild(desc);
+  }
+
+  summary.appendChild(list);
+  container.appendChild(summary);
+}
+
+/**
+ * Escapes potential HTML in strings to prevent XSS injection.
+ * @param {string} str
+ * @returns {string}
+ */
+function escapeHTML(str) {
+  return String(str)
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&#39;');
+}