diff --git a/.env_login b/.env_dev
similarity index 58%
rename from .env_login
rename to .env_dev
index 56b421dd..48146744 100644
--- a/.env_login
+++ b/.env_dev
@@ -6,3 +6,13 @@ export LOGOUT_REDIRECT_EVAL_URL=http://localhost:3000/
 export PHOENIX_URI="http://localhost:4000"
 export LOGIN_SECRET="f4d3c40a00a8e6ed72fae5204d9ddacd40f087865d40803a6fcfb935591a271838533f06081067dac24c0085c74123e7e1c8b3e0ab562c6645b17eb769854d0d"
 export JWT_SECRET="fc28c5738ca45162f61126e770a8fbdbd938d0fedcfe8fbb9f851b855b0264866364a9130e96aca8b1977e9f58edf064f1aa435ceccf415ff22fd3c24adba320"
+
+# static pages on localhost
+# export PAGES_DOMAIN="localhost:4001"
+# export PAGES_HOST="http://localhost:4001"
+# export PAGES_BASE_URL="/"
+
+# static pages on eval-dev branch
+export PAGES_DOMAIN="federalist-2c628203-05c2-48ab-8f87-3eda79380559.sites.pages.cloud.gov"
+export PAGES_HOST="https://federalist-2c628203-05c2-48ab-8f87-3eda79380559.sites.pages.cloud.gov"
+export PAGES_BASE_URL="/preview/gsa/challenges-and-prizes/eval-dev"
\ No newline at end of file
diff --git a/.envrc b/.envrc
index 4fbb075a..ebe455a6 100644
--- a/.envrc
+++ b/.envrc
@@ -6,4 +6,4 @@ mkdir -p .nix-bundler
 export BUNDLE_PATH=./.nix-bundler
 
 # Login Env Vars
-source .env_login
+source .env_dev
diff --git a/DEVCONFIG.md b/DEVCONFIG.md
index c9b2a296..9e03e755 100644
--- a/DEVCONFIG.md
+++ b/DEVCONFIG.md
@@ -66,7 +66,7 @@ Once direnv is installed and your shell is restarted, clone the project and `cd`
     ```
     ./bin/dev
     ```
-    > _NOTE for login.gov configuration_ -- if you are **not** using direnv/nix to eval `.envrc`, you can run `source .env_login` in your terminal before starting the server or add the env vars in that file to your local environment directly.
+    > _NOTE for login.gov configuration_ -- if you are **not** using direnv/nix to eval `.envrc`, you can run `source .env_dev` in your terminal before starting the server or add the env vars in that file to your local environment directly.
 
 Now you can visit [`localhost:3000`](http://localhost:3000) from your browser.
 
diff --git a/app/controllers/pages_controller.rb b/app/controllers/pages_controller.rb
index 9c2f5084..79cb99e9 100644
--- a/app/controllers/pages_controller.rb
+++ b/app/controllers/pages_controller.rb
@@ -7,13 +7,9 @@ class PagesController < ApplicationController
   protect_from_forgery except: :assets
 
   # TODO: When launched, the cloud.gov pages need to move off the www.challenge.gov domain
-  # and these constants will need to be updated. The will be similar to the commented out versions
-  DOMAIN = "federalist-2c628203-05c2-48ab-8f87-3eda79380559.sites.pages.cloud.gov"
-  HOST = "https://federalist-2c628203-05c2-48ab-8f87-3eda79380559.sites.pages.cloud.gov"
-  BASE_URL = "/preview/gsa/challenges-and-prizes/eval-dev"
-  # DOMAIN = "content.challenge.gov".freeze
-  # HOST = "https://content.challenge.gov".freeze
-  # BASE_URL = "/".freeze
+  DOMAIN = Rails.configuration.static_site_interop.fetch(:domain)
+  HOST = Rails.configuration.static_site_interop.fetch(:host)
+  BASE_URL = Rails.configuration.static_site_interop.fetch(:base_url)
 
   def index
     path = "#{BASE_URL}/#{params[:path]}/"
@@ -58,6 +54,9 @@ def rewrite_links(html)
     if BASE_URL.length > 1
       parsed_html = parsed_html.gsub(BASE_URL, "")
     end
+    # delete the data-public-url attribute from the react app element to send requests through rails proxy
+    parsed_html = parsed_html.sub(/(<div id="challenge-gov-react-app".+)(data-public-url=[^ ]+)/, '\1')
+
     # rubocop:disable Rails/OutputSafety
     parsed_html.html_safe
     # rubocop:enable Rails/OutputSafety
diff --git a/config/application.rb b/config/application.rb
index 5aeb8cb4..8bc7ffbb 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -49,6 +49,12 @@ class Application < Rails::Application
       jwt_secret: ENV.fetch("JWT_SECRET", "jwt_secret_123")
     }
 
+    config.static_site_interop = {
+      domain: ENV.fetch("PAGES_DOMAIN", "federalist-2c628203-05c2-48ab-8f87-3eda79380559.sites.pages.cloud.gov"),
+      host: ENV.fetch("PAGES_HOST", "https://federalist-2c628203-05c2-48ab-8f87-3eda79380559.sites.pages.cloud.gov"),
+      base_url: ENV.fetch("PAGES_BASE_URL", "/preview/gsa/challenges-and-prizes/staging")
+    }
+
     config.assets.initialize_on_precompile = false
   end
 end