diff --git a/src/Core/Abstractions/IEnvironmentService.cs b/src/Core/Abstractions/IEnvironmentService.cs
new file mode 100644
index 000000000..5df4e0dd2
--- /dev/null
+++ b/src/Core/Abstractions/IEnvironmentService.cs
@@ -0,0 +1,19 @@
+using System.Threading.Tasks;
+using Bit.Core.Models.Data;
+
+namespace Bit.Core.Abstractions
+{
+    public interface IEnvironmentService
+    {
+        string ApiUrl { get; set; }
+        string BaseUrl { get; set; }
+        string IconsUrl { get; set; }
+        string IdentityUrl { get; set; }
+        string NotificationsUrl { get; set; }
+        string WebVaultUrl { get; set; }
+
+        string GetWebVaultUrl();
+        Task<EnvironmentUrlData> SetUrlsAsync(EnvironmentUrlData urls);
+        Task SetUrlsFromStorageAsync();
+    }
+}
\ No newline at end of file
diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index 7b81571b2..42b0d6087 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -8,5 +8,6 @@
         public static string PinProtectedKey = "pinProtectedKey";
         public static string DefaultUriMatch = "defaultUriMatch";
         public static string DisableAutoTotpCopyKey = "disableAutoTotpCopy";
+        public static string EnvironmentUrlsKey = "environmentUrls";
     }
 }
diff --git a/src/Core/Models/Data/EnvironmentUrlData.cs b/src/Core/Models/Data/EnvironmentUrlData.cs
new file mode 100644
index 000000000..ae510a264
--- /dev/null
+++ b/src/Core/Models/Data/EnvironmentUrlData.cs
@@ -0,0 +1,12 @@
+namespace Bit.Core.Models.Data
+{
+    public class EnvironmentUrlData
+    {
+        public string Base { get; set; }
+        public string Api { get; set; }
+        public string Identity { get; set; }
+        public string Icons { get; set; }
+        public string Notifications { get; set; }
+        public string WebVault { get; set; }
+    }
+}
diff --git a/src/Core/Services/EnvironmentService.cs b/src/Core/Services/EnvironmentService.cs
new file mode 100644
index 000000000..68eb6b8d0
--- /dev/null
+++ b/src/Core/Services/EnvironmentService.cs
@@ -0,0 +1,110 @@
+using Bit.Core.Abstractions;
+using Bit.Core.Models.Data;
+using Bit.Core.Models.Domain;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace Bit.Core.Services
+{
+    public class EnvironmentService : IEnvironmentService
+    {
+        private readonly IApiService _apiService;
+        private readonly IStorageService _storageService;
+
+        public EnvironmentService(
+            IApiService apiService,
+            IStorageService storageService)
+        {
+            _apiService = apiService;
+            _storageService = storageService;
+        }
+
+        public string BaseUrl { get; set; }
+        public string WebVaultUrl { get; set; }
+        public string ApiUrl { get; set; }
+        public string IdentityUrl { get; set; }
+        public string IconsUrl { get; set; }
+        public string NotificationsUrl { get; set; }
+
+        public string GetWebVaultUrl()
+        {
+            if(!string.IsNullOrWhiteSpace(WebVaultUrl))
+            {
+                return WebVaultUrl;
+            }
+            else if(string.IsNullOrWhiteSpace(BaseUrl))
+            {
+                return BaseUrl;
+            }
+            return null;
+        }
+
+        public async Task SetUrlsFromStorageAsync()
+        {
+            var urls = await _storageService.GetAsync<EnvironmentUrlData>(Constants.EnvironmentUrlsKey);
+            if(urls == null)
+            {
+                urls = new EnvironmentUrlData();
+            }
+            var envUrls = new EnvironmentUrls();
+            if(!string.IsNullOrWhiteSpace(urls.Base))
+            {
+                BaseUrl = envUrls.Base = urls.Base;
+                _apiService.SetUrls(envUrls);
+                return;
+            }
+            WebVaultUrl = urls.WebVault;
+            ApiUrl = envUrls.Api = urls.Api;
+            IdentityUrl = envUrls.Identity = urls.Identity;
+            IconsUrl = urls.Icons;
+            NotificationsUrl = urls.Notifications;
+            _apiService.SetUrls(envUrls);
+        }
+
+        public async Task<EnvironmentUrlData> SetUrlsAsync(EnvironmentUrlData urls)
+        {
+            urls.Base = FormatUrl(urls.Base);
+            urls.WebVault = FormatUrl(urls.WebVault);
+            urls.Api = FormatUrl(urls.Api);
+            urls.Identity = FormatUrl(urls.Identity);
+            urls.Icons = FormatUrl(urls.Icons);
+            urls.Notifications = FormatUrl(urls.Notifications);
+            await _storageService.SaveAsync(Constants.EnvironmentUrlsKey, urls);
+            BaseUrl = urls.Base;
+            WebVaultUrl = urls.WebVault;
+            ApiUrl = urls.Api;
+            IdentityUrl = urls.Identity;
+            IconsUrl = urls.Icons;
+            NotificationsUrl = urls.Notifications;
+
+            var envUrls = new EnvironmentUrls();
+            if(!string.IsNullOrWhiteSpace(BaseUrl))
+            {
+                envUrls.Base = BaseUrl;
+            }
+            else
+            {
+                envUrls.Api = ApiUrl;
+                envUrls.Identity = IdentityUrl;
+            }
+
+            _apiService.SetUrls(envUrls);
+            // TODO: init notifications service
+            return urls;
+        }
+
+        private string FormatUrl(string url)
+        {
+            if(string.IsNullOrWhiteSpace(url))
+            {
+                return null;
+            }
+            url = Regex.Replace(url, "\\/+$", string.Empty);
+            if(!url.StartsWith("http://") && !url.StartsWith("https://"))
+            {
+                url = string.Concat("https://", url);
+            }
+            return url.Trim();
+        }
+    }
+}