diff --git a/lib/aws_agcod.rb b/lib/aws_agcod.rb
index d911ea6..f2fa9c5 100644
--- a/lib/aws_agcod.rb
+++ b/lib/aws_agcod.rb
@@ -6,7 +6,7 @@
 
 module AGCOD
   def self.configure(&block)
-    @config = Config.new
+    @config ||= Config.new
 
     yield @config
 
diff --git a/lib/aws_agcod/config.rb b/lib/aws_agcod/config.rb
index f936a5d..da4dfcf 100644
--- a/lib/aws_agcod/config.rb
+++ b/lib/aws_agcod/config.rb
@@ -9,8 +9,16 @@ class Config
                   :production
 
     URI = {
-      sandbox: "https://agcod-v2-gamma.amazon.com",
-      production: "https://agcod-v2.amazon.com"
+      sandbox: {
+        "us-east-1" => "https://agcod-v2-gamma.amazon.com",
+        "eu-west-1" => "https://agcod-v2-eu-gamma.amazon.com",
+        "us-west-2" => "https://agcod-v2-fe-gamma.amazon.com"
+      },
+      production: {
+        "us-east-1" => "https://agcod-v2.amazon.com",
+        "eu-west-1" => "https://agcod-v2-eu.amazon.com",
+        "us-west-2" => "https://agcod-v2-fe.amazon.com"
+      }
     }
 
     def initialize
@@ -22,8 +30,7 @@ def initialize
 
     def uri
       return @uri if @uri
-
-      production ? URI[:production] : URI[:sandbox]
+      production ? URI[:production][@region] : URI[:sandbox][@region]
     end
   end
 end
diff --git a/spec/aws_agcod/config_spec.rb b/spec/aws_agcod/config_spec.rb
index 35fb96a..d27a938 100644
--- a/spec/aws_agcod/config_spec.rb
+++ b/spec/aws_agcod/config_spec.rb
@@ -25,19 +25,43 @@
     end
 
     context "when uri is not set" do
-      context "when production is enabled" do
-        before do
-          config.production = true
+      context "with default region" do
+        context "when production is enabled" do
+          before do
+            config.production = true
+          end
+
+          it "returns the us-east-1 production uri" do
+            expect(config.uri).to eq(AGCOD::Config::URI[:production]["us-east-1"])
+          end
         end
 
-        it "returns the production uri" do
-          expect(config.uri).to eq(AGCOD::Config::URI[:production])
+        context "when production is disabled" do
+          it "returns the us-east-1 sandbox uri" do
+            expect(config.uri).to eq(AGCOD::Config::URI[:sandbox]["us-east-1"])
+          end
         end
       end
 
-      context "when production is disabled" do
-        it "returns the sandbox uri" do
-          expect(config.uri).to eq(AGCOD::Config::URI[:sandbox])
+      context "with specified region" do
+        before do
+          config.region = "eu-west-1"
+        end
+
+        context "when production is enabled" do
+          before do
+            config.production = true
+          end
+
+          it "returns the specified production uri" do
+            expect(config.uri).to eq(AGCOD::Config::URI[:production]["eu-west-1"])
+          end
+        end
+
+        context "when production is disabled" do
+          it "returns the us-east-1 sandbox uri" do
+            expect(config.uri).to eq(AGCOD::Config::URI[:sandbox]["eu-west-1"])
+          end
         end
       end
     end