diff --git a/backend/src/services/campaignController.ts b/backend/src/services/campaignController.ts
new file mode 100644
index 0000000..0d75541
--- /dev/null
+++ b/backend/src/services/campaignController.ts
@@ -0,0 +1,25 @@
+// src/controllers/campaignController.ts
+
+const VALID_SORT_FIELDS = ['createdAt', 'deadline', 'pledgedAmount', 'percentFunded'];
+const VALID_ORDERS = ['asc', 'desc'];
+
+export const getCampaigns = async (req, res) => {
+  const { sortBy = 'createdAt', order = 'desc' } = req.query;
+
+  // Acceptance Criteria: Invalid sort values return 400
+  if (!VALID_SORT_FIELDS.includes(sortBy) || !VALID_ORDERS.includes(order)) {
+    return res.status(400).json({ 
+      error: "Invalid sort field or order. Use: createdTime, deadline, pledgedAmount, or percentFunded." 
+    });
+  }
+
+  // Logic: Stability when combined with filters
+  const campaigns = await CampaignService.findAll({
+    where: req.filters, // Existing filters
+    order: [[sortBy, order]],
+  });
+
+  res.json(campaigns);
+//  Define allowed values for Acceptance Criteria
+};
+