diff --git a/.scenarios.lock/phpunit5/composer.json b/.scenarios.lock/phpunit5/composer.json
index 1890456..a2df403 100644
--- a/.scenarios.lock/phpunit5/composer.json
+++ b/.scenarios.lock/phpunit5/composer.json
@@ -24,8 +24,8 @@
     },
     "require": {
         "php": ">=5.6.0",
-        "consolidation/site-alias": "^2.1.1",
         "consolidation/config": "^1.2",
+        "consolidation/site-alias": "^3.0.0-alpha1",
         "symfony/process": "^3.4"
     },
     "require-dev": {
diff --git a/.scenarios.lock/phpunit5/composer.lock b/.scenarios.lock/phpunit5/composer.lock
index ec7aed2..e308cd0 100644
--- a/.scenarios.lock/phpunit5/composer.lock
+++ b/.scenarios.lock/phpunit5/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "63b35bfea71d5c8b96919a13523a2e28",
+    "content-hash": "5abb8a8a3c310c6a39e84096ac31d3ea",
     "packages": [
         {
             "name": "consolidation/config",
@@ -89,16 +89,16 @@
         },
         {
             "name": "consolidation/site-alias",
-            "version": "2.1.1",
+            "version": "3.0.0-alpha1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/consolidation/site-alias.git",
-                "reference": "13588daf533c9a8df4c9495e3418685cd06867c4"
+                "reference": "cbf66ca26ad897b13162164905e099abf386035a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/consolidation/site-alias/zipball/13588daf533c9a8df4c9495e3418685cd06867c4",
-                "reference": "13588daf533c9a8df4c9495e3418685cd06867c4",
+                "url": "https://api.github.com/repos/consolidation/site-alias/zipball/cbf66ca26ad897b13162164905e099abf386035a",
+                "reference": "cbf66ca26ad897b13162164905e099abf386035a",
                 "shasum": ""
             },
             "require": {
@@ -156,7 +156,7 @@
                 }
             ],
             "description": "Manage alias records for local and remote sites.",
-            "time": "2019-01-03T14:40:53+00:00"
+            "time": "2019-03-02T05:48:32+00:00"
         },
         {
             "name": "dflydev/dot-access-data",
@@ -3778,7 +3778,9 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "consolidation/site-alias": 15
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
diff --git a/LICENSE b/LICENSE
index 356b3e6..d56f2d9 100644
--- a/LICENSE
+++ b/LICENSE
@@ -21,9 +21,9 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 DEPENDENCY LICENSES:
 
-Name                      Version  License
-consolidation/config      1.2.0    MIT
-consolidation/site-alias  2.1.1    MIT
-dflydev/dot-access-data   v1.1.0   MIT
-grasmash/expander         1.0.0    MIT
-symfony/process           v3.4.22  MIT
\ No newline at end of file
+Name                      Version       License
+consolidation/config      1.2.0         MIT
+consolidation/site-alias  3.0.0-alpha1  MIT
+dflydev/dot-access-data   v1.1.0        MIT
+grasmash/expander         1.0.0         MIT
+symfony/process           v3.4.22       MIT
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 7dcc8ad..f1659ba 100644
--- a/composer.json
+++ b/composer.json
@@ -24,8 +24,8 @@
     },
     "require": {
         "php": ">=5.6.0",
-        "consolidation/site-alias": "^2.1.1",
         "consolidation/config": "^1.2",
+        "consolidation/site-alias": "^3.0.0-alpha1",
         "symfony/process": "^3.4"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index b31de87..e0e479d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "23afb1800049fe5125ebd61bd7f03d3a",
+    "content-hash": "bc9eba0080b87ac7b7969e4b785a3768",
     "packages": [
         {
             "name": "consolidation/config",
@@ -89,16 +89,16 @@
         },
         {
             "name": "consolidation/site-alias",
-            "version": "2.1.1",
+            "version": "3.0.0-alpha1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/consolidation/site-alias.git",
-                "reference": "13588daf533c9a8df4c9495e3418685cd06867c4"
+                "reference": "cbf66ca26ad897b13162164905e099abf386035a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/consolidation/site-alias/zipball/13588daf533c9a8df4c9495e3418685cd06867c4",
-                "reference": "13588daf533c9a8df4c9495e3418685cd06867c4",
+                "url": "https://api.github.com/repos/consolidation/site-alias/zipball/cbf66ca26ad897b13162164905e099abf386035a",
+                "reference": "cbf66ca26ad897b13162164905e099abf386035a",
                 "shasum": ""
             },
             "require": {
@@ -156,7 +156,7 @@
                 }
             ],
             "description": "Manage alias records for local and remote sites.",
-            "time": "2019-01-03T14:40:53+00:00"
+            "time": "2019-03-02T05:48:32+00:00"
         },
         {
             "name": "dflydev/dot-access-data",
@@ -4257,7 +4257,9 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "consolidation/site-alias": 15
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
diff --git a/src/Factory/DockerComposeTransportFactory.php b/src/Factory/DockerComposeTransportFactory.php
index 7a882cf..465e763 100644
--- a/src/Factory/DockerComposeTransportFactory.php
+++ b/src/Factory/DockerComposeTransportFactory.php
@@ -2,7 +2,7 @@
 
 namespace Consolidation\SiteProcess\Factory;
 
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Consolidation\SiteProcess\Transport\DockerComposeTransport;
 use Consolidation\Config\ConfigInterface;
 
@@ -15,7 +15,7 @@ class DockerComposeTransportFactory implements TransportFactoryInterface
     /**
      * @inheritdoc
      */
-    public function check(AliasRecord $siteAlias)
+    public function check(AliasRecordInterface $siteAlias)
     {
         // TODO: deprecate and eventually remove 'isContainer()', and move the logic here.
         return $siteAlias->isContainer();
@@ -24,8 +24,8 @@ public function check(AliasRecord $siteAlias)
     /**
      * @inheritdoc
      */
-    public function create(AliasRecord $siteAlias, ConfigInterface $config)
+    public function create(AliasRecordInterface $siteAlias)
     {
-        return new DockerComposeTransport($siteAlias, $config);
+        return new DockerComposeTransport($siteAlias);
     }
 }
diff --git a/src/Factory/SshTransportFactory.php b/src/Factory/SshTransportFactory.php
index d91a7fb..316afa4 100644
--- a/src/Factory/SshTransportFactory.php
+++ b/src/Factory/SshTransportFactory.php
@@ -2,7 +2,7 @@
 
 namespace Consolidation\SiteProcess\Factory;
 
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Consolidation\SiteProcess\Transport\SshTransport;
 use Consolidation\Config\ConfigInterface;
 
@@ -14,7 +14,7 @@ class SshTransportFactory implements TransportFactoryInterface
     /**
      * @inheritdoc
      */
-    public function check(AliasRecord $siteAlias)
+    public function check(AliasRecordInterface $siteAlias)
     {
         // TODO: deprecate and eventually remove 'isRemote()', and move the logic here.
         return $siteAlias->isRemote();
@@ -23,8 +23,8 @@ public function check(AliasRecord $siteAlias)
     /**
      * @inheritdoc
      */
-    public function create(AliasRecord $siteAlias, ConfigInterface $config)
+    public function create(AliasRecordInterface $siteAlias)
     {
-        return new SshTransport($siteAlias, $config);
+        return new SshTransport($siteAlias);
     }
 }
diff --git a/src/Factory/TransportFactoryInterface.php b/src/Factory/TransportFactoryInterface.php
index f429e16..634087e 100644
--- a/src/Factory/TransportFactoryInterface.php
+++ b/src/Factory/TransportFactoryInterface.php
@@ -2,7 +2,7 @@
 
 namespace Consolidation\SiteProcess\Factory;
 
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Consolidation\SiteProcess\Transport\TransportInterface;
 use Consolidation\Config\ConfigInterface;
 
@@ -20,15 +20,15 @@ interface TransportFactoryInterface
 {
     /**
      * Check to see if a provided site alias is applicable to this transport type.
-     * @param AliasRecord $siteAlias
+     * @param AliasRecordInterface $siteAlias
      * @return bool
      */
-    public function check(AliasRecord $siteAlias);
+    public function check(AliasRecordInterface $siteAlias);
 
     /**
      * Create a transport instance for an applicable site alias.
-     * @param AliasRecord $siteAlias
+     * @param AliasRecordInterface $siteAlias
      * @return TransportInterface
      */
-    public function create(AliasRecord $siteAlias, ConfigInterface $config);
+    public function create(AliasRecordInterface $siteAlias);
 }
diff --git a/src/ProcessManager.php b/src/ProcessManager.php
index ab0bf33..dce186c 100644
--- a/src/ProcessManager.php
+++ b/src/ProcessManager.php
@@ -3,7 +3,7 @@
 namespace Consolidation\SiteProcess;
 
 use Psr\Log\LoggerInterface;
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Consolidation\SiteProcess\Factory\SshTransportFactory;
 use Consolidation\SiteProcess\Factory\DockerComposeTransportFactory;
 use Consolidation\SiteProcess\Factory\TransportFactoryInterface;
@@ -13,6 +13,7 @@
 use Consolidation\Config\ConfigInterface;
 use Consolidation\Config\ConfigAwareInterface;
 use Consolidation\Config\ConfigAwareTrait;
+use Consolidation\SiteAlias\SiteAliasWithConfig;
 
 /**
  * ProcessManager will create a SiteProcess to run a command on a given
@@ -25,11 +26,29 @@ class ProcessManager implements ConfigAwareInterface
 {
     use ConfigAwareTrait;
 
+    /** @var ConfigInterface */
+    protected $configRuntime;
+
     protected $transportFactories = [];
 
     public function __construct()
     {
         $this->config = new Config();
+        $this->configRuntime = new Config();
+    }
+
+    /**
+     * setConfigRuntime sets the config object that holds runtime config
+     * items, i.e. config set from the commandline rather than a config file.
+     * Configuration priority (highest to lowest) is:
+     *   - config runtime
+     *   - site alias
+     *   - config files
+     */
+    public function setConfigRuntime(ConfigInterface $configRuntime)
+    {
+        $this->configRuntime = $configRuntime;
+        return $this;
     }
 
     /**
@@ -48,13 +67,13 @@ public static function createDefault()
     /**
      * Return a site process configured with an appropriate transport
      *
-     * @param AliasRecord $siteAlias Target for command
+     * @param AliasRecordInterface $siteAlias Target for command
      * @param array $args Command arguments
      * @param array $options Associative array of command options
      * @param array $optionsPassedAsArgs Associtive array of options to be passed as arguments (after double-dash)
      * @return Process
      */
-    public function siteProcess(AliasRecord $siteAlias, $args = [], $options = [], $optionsPassedAsArgs = [])
+    public function siteProcess(AliasRecordInterface $siteAlias, $args = [], $options = [], $optionsPassedAsArgs = [])
     {
         $transport = $this->getTransport($siteAlias);
         $process = new SiteProcess($siteAlias, $transport, $args, $options, $optionsPassedAsArgs);
@@ -103,10 +122,10 @@ public function add(TransportFactoryInterface $factory)
      * hasTransport determines if there is a transport that handles the
      * provided site alias.
      *
-     * @param AliasRecord $siteAlias
+     * @param AliasRecordInterface $siteAlias
      * @return boolean
      */
-    public function hasTransport(AliasRecord $siteAlias)
+    public function hasTransport(AliasRecordInterface $siteAlias)
     {
         return $this->getTransportFactory($siteAlias) !== null;
     }
@@ -114,14 +133,17 @@ public function hasTransport(AliasRecord $siteAlias)
     /**
      * getTransport returns a transport that is applicable to the provided site alias.
      *
-     * @param AliasRecord $siteAlias
+     * @param AliasRecordInterface $siteAlias
      * @return TransportInterface
      */
-    public function getTransport(AliasRecord $siteAlias)
+    public function getTransport(AliasRecordInterface $siteAlias)
     {
         $factory = $this->getTransportFactory($siteAlias);
+
+        $siteAliasWithConfig = new SiteAliasWithConfig($this->configRuntime, $siteAlias, $this->config);
+
         if ($factory) {
-            return $factory->create($siteAlias, $this->config);
+            return $factory->create($siteAliasWithConfig);
         }
         return new LocalTransport();
     }
@@ -129,10 +151,10 @@ public function getTransport(AliasRecord $siteAlias)
     /**
      * getTransportFactory returns a factory for the provided site alias.
      *
-     * @param AliasRecord $siteAlias
+     * @param AliasRecordInterface $siteAlias
      * @return TransportFactoryInterface
      */
-    protected function getTransportFactory(AliasRecord $siteAlias)
+    protected function getTransportFactory(AliasRecordInterface $siteAlias)
     {
         foreach ($this->transportFactories as $factory) {
             if ($factory->check($siteAlias)) {
diff --git a/src/SiteProcess.php b/src/SiteProcess.php
index c10fb80..4e39312 100644
--- a/src/SiteProcess.php
+++ b/src/SiteProcess.php
@@ -1,7 +1,7 @@
 <?php
 namespace Consolidation\SiteProcess;
 
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Consolidation\SiteProcess\Transport\DockerComposeTransport;
 use Consolidation\SiteProcess\Util\ArgumentProcessor;
 use Consolidation\SiteProcess\Transport\LocalTransport;
@@ -21,7 +21,7 @@
  */
 class SiteProcess extends ProcessBase
 {
-    /** @var AliasRecord */
+    /** @var AliasRecordInterface */
     protected $siteAlias;
     /** @var string[] */
     protected $args;
@@ -38,7 +38,7 @@ class SiteProcess extends ProcessBase
      * Process arguments and options per the site alias and build the
      * actual command to run.
      */
-    public function __construct(AliasRecord $siteAlias, TransportInterface $transport, $args, $options = [], $optionsPassedAsArgs = [])
+    public function __construct(AliasRecordInterface $siteAlias, TransportInterface $transport, $args, $options = [], $optionsPassedAsArgs = [])
     {
         $this->siteAlias = $siteAlias;
         $this->transport = $transport;
@@ -147,7 +147,7 @@ public function setTransport($transport)
      * Ask the transport manager for the correct transport for the
      * provided alias.
      */
-    protected function getTransport(AliasRecord $siteAlias)
+    protected function getTransport(AliasRecordInterface $siteAlias)
     {
         return $this->transport;
     }
@@ -198,7 +198,7 @@ public function wait(callable $callback = null)
      * It is possible to use dot notation in the keys to access nested elements
      * within the site alias record.
      *
-     * @param AliasRecord $siteAlias
+     * @param AliasRecordInterface $siteAlias
      * @param type $args
      * @return type
      */
diff --git a/src/Transport/DockerComposeTransport.php b/src/Transport/DockerComposeTransport.php
index bb0012f..92f7d42 100644
--- a/src/Transport/DockerComposeTransport.php
+++ b/src/Transport/DockerComposeTransport.php
@@ -3,7 +3,7 @@
 namespace Consolidation\SiteProcess\Transport;
 
 use Consolidation\SiteProcess\SiteProcess;
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Consolidation\SiteProcess\Util\Shell;
 use Consolidation\Config\ConfigInterface;
 
@@ -16,12 +16,10 @@ class DockerComposeTransport implements TransportInterface
     protected $tty;
     protected $siteAlias;
     protected $cd_remote;
-    protected $config;
 
-    public function __construct(AliasRecord $siteAlias, ConfigInterface $config)
+    public function __construct(AliasRecordInterface $siteAlias)
     {
         $this->siteAlias = $siteAlias;
-        $this->config = $config;
     }
 
     /**
@@ -64,7 +62,7 @@ public function addChdir($cd, $args)
     protected function getTransportOptions()
     {
         $transportOptions = [
-            $this->siteAlias->getConfig($this->config, 'docker.service', ''),
+            $this->siteAlias->get('docker.service', ''),
         ];
         if ($options = $this->siteAlias->get('docker.exec.options', '')) {
             array_unshift($transportOptions, Shell::preEscaped($options));
diff --git a/src/Transport/SshTransport.php b/src/Transport/SshTransport.php
index 72e8a17..33e9fc2 100644
--- a/src/Transport/SshTransport.php
+++ b/src/Transport/SshTransport.php
@@ -4,7 +4,7 @@
 
 use Consolidation\SiteProcess\SiteProcess;
 use Consolidation\SiteProcess\Util\Escape;
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Consolidation\SiteProcess\Util\Shell;
 use Consolidation\Config\ConfigInterface;
 
@@ -16,12 +16,10 @@ class SshTransport implements TransportInterface
 {
     protected $tty;
     protected $siteAlias;
-    protected $config;
 
-    public function __construct(AliasRecord $siteAlias, ConfigInterface $config)
+    public function __construct(AliasRecordInterface $siteAlias)
     {
         $this->siteAlias = $siteAlias;
-        $this->config = $config;
     }
 
     /**
@@ -70,7 +68,7 @@ public function addChdir($cd_remote, $args)
     protected function getTransportOptions()
     {
         $transportOptions = [
-            Shell::preEscaped($this->siteAlias->getConfig($this->config, 'ssh.options', '-o PasswordAuthentication=no')),
+            Shell::preEscaped($this->siteAlias->get('ssh.options', '-o PasswordAuthentication=no')),
             $this->siteAlias->remoteHostWithUser(),
         ];
         if ($this->tty) {
diff --git a/src/Transport/TransportInterface.php b/src/Transport/TransportInterface.php
index 9ac3787..77c7bc6 100644
--- a/src/Transport/TransportInterface.php
+++ b/src/Transport/TransportInterface.php
@@ -14,7 +14,6 @@
  */
 interface TransportInterface
 {
-
     /**
      * Configure ourselves based on the settings of the process object
      * (e.g. isTty()).
@@ -29,7 +28,6 @@ public function configure(SiteProcess $process);
      * alias points at a remote system, though, then the arguments are
      * escaped and wrapped in an appropriate ssh command.
      *
-     * @param AliasRecord $siteAlias alias record of target site.
      * @param array $args arguments provided by caller.
      * @return array command and arguments to execute.
      */
diff --git a/src/Util/ArgumentProcessor.php b/src/Util/ArgumentProcessor.php
index 69c9721..01eb811 100644
--- a/src/Util/ArgumentProcessor.php
+++ b/src/Util/ArgumentProcessor.php
@@ -1,7 +1,7 @@
 <?php
 namespace Consolidation\SiteProcess\Util;
 
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Symfony\Component\Process\Process;
 use Consolidation\SiteProcess\Transport\TransportInterface;
 
@@ -17,7 +17,7 @@ class ArgumentProcessor
      * selectArgs selects the appropriate set of arguments for the command
      * to be executed and orders them as needed.
      *
-     * @param AliasRecord $siteAlias Description of
+     * @param AliasRecordInterface $siteAlias Description of
      * @param array $args Command and arguments to execute (source)
      * @param array $options key / value pair of option and value in include
      *   in final arguments
@@ -25,7 +25,7 @@ class ArgumentProcessor
      *   to include in final arguments after the '--' argument.
      * @return array Command and arguments to execute
      */
-    public function selectArgs(AliasRecord $siteAlias, $args, $options = [], $optionsPassedAsArgs = [])
+    public function selectArgs(AliasRecordInterface $siteAlias, $args, $options = [], $optionsPassedAsArgs = [])
     {
         // Split args into three arrays separated by the `--`
         list($leadingArgs, $dashDash, $remaingingArgs) = $this->findArgSeparator($args);
diff --git a/src/Util/Escape.php b/src/Util/Escape.php
index 7e643cc..2732a16 100644
--- a/src/Util/Escape.php
+++ b/src/Util/Escape.php
@@ -1,7 +1,7 @@
 <?php
 namespace Consolidation\SiteProcess\Util;
 
-use Consolidation\SiteAlias\AliasRecord;
+use Consolidation\SiteAlias\AliasRecordInterface;
 use Symfony\Component\Process\Process;
 use Consolidation\Config\Util\Interpolator;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -15,7 +15,7 @@ class Escape
     /**
      * argsForSite escapes each argument in an array for the given site.
      */
-    public static function argsForSite(AliasRecord $siteAlias, $args)
+    public static function argsForSite(AliasRecordInterface $siteAlias, $args)
     {
         return array_map(
             function ($arg) use ($siteAlias) {
@@ -28,7 +28,7 @@ function ($arg) use ($siteAlias) {
     /**
      * forSite escapes the provided argument for the specified alias record.
      */
-    public static function forSite(AliasRecord $siteAlias, $arg)
+    public static function forSite(AliasRecordInterface $siteAlias, $arg)
     {
         return static::shellArg($arg, $siteAlias->os());
     }
diff --git a/src/Util/RealtimeOutputHandler.php b/src/Util/RealtimeOutputHandler.php
index 8bceec0..8a71611 100644
--- a/src/Util/RealtimeOutputHandler.php
+++ b/src/Util/RealtimeOutputHandler.php
@@ -1,7 +1,6 @@
 <?php
 namespace Consolidation\SiteProcess\Util;
 
-use Consolidation\SiteAlias\AliasRecord;
 use Symfony\Component\Process\Process;
 use Consolidation\Config\Util\Interpolator;
 use Symfony\Component\Console\Output\OutputInterface;