diff --git a/meta/io.murano.applications/Classes/component.yaml b/meta/io.murano.applications/Classes/component.yaml
index 66aef5673..494e14092 100644
--- a/meta/io.murano.applications/Classes/component.yaml
+++ b/meta/io.murano.applications/Classes/component.yaml
@@ -37,7 +37,8 @@ Methods:
       - serverGroup:
           Contract: $.class(ServerGroup).notNull()
     Body:
-      - $serversToInstall: $serverGroup.items.pselect(switch($this.checkServerIsInstalled($) => null, true => $)).where($ != null)
+      - $serversToInstall: $serverGroup.getServers().pselect(
+          switch($this.checkServerIsInstalled($) => null, true => $)).where($ != null)
       - If: any($serversToInstall)
         Then:
           - $.beforeInstall($serversToInstall, $serverGroup)
@@ -198,7 +199,8 @@ Methods:
       - If: $this.checkClusterIsConfigured($serverGroup)
         Then:
           - Return:
-      - $serversToConfigure: $serverGroup.items.pselect(switch($this.checkServerIsConfigured($, $serverGroup) => null, true => $)).where($ != null)
+      - $serversToConfigure: $serverGroup.getServers().pselect(
+          switch($this.checkServerIsConfigured($, $serverGroup) => null, true => $)).where($ != null)
       - $this.preConfigure($serversToConfigure, $serverGroup)
       - $failures: $serversToConfigure.pselect($this.configureServer($, $serverGroup)).where($ != null)
       - $.completeConfiguration($serversToConfigure, $serverGroup, $failures)
@@ -417,7 +419,7 @@ Methods:
           any:
             - Return: true
           quorum:
-            - $numServers: len($serverGroup.items)
+            - $numServers: $serverGroup.getServers().count()
             - $maxFailures: $numServers - ($numServers/2 + 1)
             - Return: $numFailures <= $maxFailures
         Value: $allowedFailures
diff --git a/meta/io.murano.applications/Classes/replication.yaml b/meta/io.murano.applications/Classes/replication.yaml
index 3859f2ec6..775688580 100644
--- a/meta/io.murano.applications/Classes/replication.yaml
+++ b/meta/io.murano.applications/Classes/replication.yaml
@@ -37,7 +37,7 @@ Properties:
     Default: 1
 
   items:
-    Usage: InOut
+    Usage: Out
     Contract:
       - $.class(std:Object)
 
diff --git a/meta/io.murano.applications/Classes/servers.yaml b/meta/io.murano.applications/Classes/servers.yaml
index 4e0b01f08..b795d21e5 100644
--- a/meta/io.murano.applications/Classes/servers.yaml
+++ b/meta/io.murano.applications/Classes/servers.yaml
@@ -16,20 +16,122 @@ Namespaces:
   res: io.murano.resources
   std: io.murano
 
+--- # ------------------------------------------------------------------ # ---
+# A group of Servers
+
+Name: ServerGroup
+Methods:
+  getServers:
+
+  deployServers:
+    Usage: Static
+    Arguments:
+      - servers:
+          Contract:
+            - $.class(res:Instance).notNull()
+      - environment:
+          Contract: $.class(std:Environment)
+    Body:
+      - $servers.select($this._deployServer($, $environment))
+      - $servers.select($.endDeploy())
+
+  releaseServers:
+    Usage: Static
+    Arguments:
+      - servers:
+          Contract:
+            - $.class(res:Instance).notNull()
+    Body:
+      - $servers.select($.beginReleaseResources())
+      - $servers.select($.endReleaseResources())
+
+  _deployServer:
+    Usage: Static
+    Arguments:
+      - server:
+          Contract: $.class(res:Instance).notNull()
+      - environment:
+          Contract: $.class(std:Environment)
+    Body:
+      - If: $environment and not $server.openstackId
+        Then:
+          - $environment.reporter.report($this, 'Provisioning VM for ' + name($server) or $server.name)
+      - $server.beginDeploy()
+
+--- # ------------------------------------------------------------------ # ---
+# A group of prepopulated servers
+
+Name: ServerList
+Extends: ServerGroup
+
+Properties:
+  servers:
+    Contract:
+      - $.class(res:Instance).notNull()
+
+Methods:
+  .init:
+    Body:
+      - $this._env: $.find(std:Environment)
+
+  deploy:
+    Body:
+      - $this.deployServers($this.servers, $this._env)
+
+  .destroy:
+    Body:
+      - $this.releaseServers($this.items)
+
+  getServers:
+    Body:
+      Return: $.servers
+
+--- # ------------------------------------------------------------------ # ---
+# Degenrate case of a server group which consists of a single server
+
+Name: SingleServerGroup
+Extends: ServerGroup
+
+Properties:
+  server:
+    Contract: $.class(res:Instance).notNull()
+
+Methods:
+  setServer:
+    Arguments:
+      - server:
+          Contract: $.class(res:Instance).notNull()
+    Body:
+      - $this.items: $server
+
+  deploy:
+    Body:
+      - $this.deployServers([$this.server], $this._env)
+
+  .destroy:
+    Body:
+      - $this.releaseServers([$this.server])
+
+  getServers:
+    Body:
+      Return: [$.server]
+
 --- # ------------------------------------------------------------------ # ---
 # A replication group aggregating Servers
 # Adds a logic to concurrently provision and unprovision servers
 
 
-Name: ServerGroup
+Name: ServerReplicationGroup
 Extends:
   - ReplicationGroup
+  - ServerGroup
 
 Properties:
   provider:
     Contract: $.class(ReplicaProvider).notNull()
+
   items:
-    Usage: InOut
+    Usage: Out
     Contract:
       - $.class(res:Instance)
 
@@ -50,27 +152,38 @@ Methods:
               - $target: format(' {0} {1}', $target, name($this))
             Else:
               - $target: ''
-          - $this._env.reporter.report($this, format('{0} {1} servers{2}', $verb, abs($delta), $target))
-
-
+          - $this._env.reporter.report($this, format('{0} {1} servers{2}',
+              $verb, abs($delta), $target))
       - cast($this, ReplicationGroup).deploy()
-      - $this.items.select($this._deployServer($))
-      - $this.items.select($.endDeploy())
-
-  _deployServer:
-    Arguments:
-      - server:
-          Contract: $.class(res:Instance)
-    Body:
-      - If: $this._env and not $server.openstackId
-        Then:
-          - $this._env.reporter.report($this, 'Provisioning VM for ' + name($server) or $server.name)
-      - $server.beginDeploy()
+      - $this.deployServers($this.items, $this._env)
 
   .destroy:
     Body:
-      - $this.items.select($.beginReleaseResources())
-      - $this.items.select($.endReleaseResources())
+      - $this.releaseServers($this.items)
+
+  getServers:
+    Body:
+      Return: $.items
+
+--- # ------------------------------------------------------------------ # ---
+# A server group that composed of other server groups
+
+Name: CompositeServerGroup
+Extends: ServerGroup
+
+Properties:
+  serverGroups:
+    Contract:
+      - $.class(ServerGroup).notNull()
+
+Methods:
+  deploy:
+    Body:
+      - $this.serverGroups.pselect($.deploy())
+
+  getServers:
+    Body:
+      Return: $this.serverGroups.selectMany($.getServers())
 
 --- # ------------------------------------------------------------------ # ---
 # A replication provider acting as a default factory class for Servers
diff --git a/meta/io.murano.applications/Classes/tests/TestServerProviders.yaml b/meta/io.murano.applications/Classes/tests/TestServerProviders.yaml
index fe6065437..a514e4119 100644
--- a/meta/io.murano.applications/Classes/tests/TestServerProviders.yaml
+++ b/meta/io.murano.applications/Classes/tests/TestServerProviders.yaml
@@ -83,22 +83,22 @@ Methods:
 
 
       - $serverTemplate: new(res:LinuxMuranoInstance, $this.environment,
-                               name=>'whatever',
-                               image=>'murano-latest',
-                               flavor=>'t1.medium')
-      - $this.provider: new(apps:ServerProvider, source=>$serverTemplate,
-                            serverNamePattern=>'testNode-{0}')
+                               name => 'whatever',
+                               image => 'murano-latest',
+                               flavor => 't1.medium')
+      - $this.provider: new(apps:ServerProvider, source => $serverTemplate,
+                            serverNamePattern => 'testNode-{0}')
 
   testCreateSingleServer:
     Body:
-      - $ssg: new(apps:ServerGroup, provider=>$this.provider)
+      - $ssg: new(apps:ServerReplicationGroup, provider => $this.provider)
       - $ssg.deploy()
       - $this.assertServerCount(1)
 
   testServersHaveProperName:
     Body:
       - $model:
-          apps:ServerGroup:
+          apps:ServerReplicationGroup:
             numItems: 2
             provider:
               apps:ServerProvider:
@@ -113,13 +113,13 @@ Methods:
 
   testCreateMultipleServers:
     Body:
-      - $ssg: new(apps:ServerGroup, provider=>$this.provider, numItems=>5)
+      - $ssg: new(apps:ServerReplicationGroup, provider => $this.provider, numItems => 5)
       - $ssg.deploy()
       - $this.assertServerCount(5)
 
   testCreateScaleUp:
     Body:
-      - $ssg: new(apps:ServerGroup, provider=>$this.provider, numItems=>3)
+      - $ssg: new(apps:ServerReplicationGroup, provider => $this.provider, numItems => 3)
       - $ssg.deploy()
       - $this.assertServerCount(3)
       - $ssg.scale(4)
@@ -128,7 +128,7 @@ Methods:
 
   testCreateScaleDown:
     Body:
-      - $ssg: new(apps:ServerGroup, provider=>$this.provider, numItems=>3)
+      - $ssg: new(apps:ServerReplicationGroup, provider => $this.provider, numItems => 3)
       - $ssg.deploy()
       - $this.assertServerCount(3)
       - $ssg.scale(-2)
@@ -137,7 +137,8 @@ Methods:
 
   testMultipleServersReporting:
     Body:
-      - $ssg: new(apps:ServerGroup, $this.environment, TestGroup, provider=>$this.provider, numItems=>3)
+      - $ssg: new(apps:ServerReplicationGroup, $this.environment, TestGroup,
+          provider => $this.provider, numItems => 3)
       - $ssg.deploy()
       - $this.assertEqual('Creating 3 servers for TestGroup', $this.reports[0])
       - $ssg.scale(-2)
@@ -145,7 +146,8 @@ Methods:
 
   testMultipleServersReportingNoGroupName:
     Body:
-      - $ssg: new(apps:ServerGroup, $this.environment, null, provider=>$this.provider, numItems=>3)
+      - $ssg: new(apps:ServerReplicationGroup, $this.environment, null,
+          provider => $this.provider, numItems => 3)
       - $ssg.deploy()
       - $this.assertEqual('Creating 3 servers', $this.reports[0])
       - $ssg.scale(-2)
@@ -153,7 +155,8 @@ Methods:
 
   testNoReportingIfSingleServer:
     Body:
-      - $ssg: new(apps:ServerGroup, $this.environment, TestGroup, provider=>$this.provider, numItems=>1)
+      - $ssg: new(apps:ServerReplicationGroup, $this.environment, TestGroup,
+          provider => $this.provider, numItems => 1)
       - $ssg.deploy()
       - $this.assertEqual(1, len($this.reports))
 
@@ -163,4 +166,5 @@ Methods:
       - count:
           Contract: $.int()
     Body:
-      - $this.assertEqual($count, $this.currentTemplate.resources.values().where($.type='OS::Nova::Server').len())
+      - $this.assertEqual($count, $this.currentTemplate.resources.values().where(
+        $.type = 'OS::Nova::Server').len())
diff --git a/meta/io.murano.applications/Classes/tests/TestSoftwareComponent.yaml b/meta/io.murano.applications/Classes/tests/TestSoftwareComponent.yaml
index deccdd964..45f1d0537 100644
--- a/meta/io.murano.applications/Classes/tests/TestSoftwareComponent.yaml
+++ b/meta/io.murano.applications/Classes/tests/TestSoftwareComponent.yaml
@@ -54,7 +54,7 @@ Methods:
                      flavor=>'noop')
       - $provider: new(apps:ServerProvider, $this.environment,
                        source=>$server, serverNamePattern=>'testNode-{0}')
-      - $this.group: new(apps:ServerGroup, provider=>$provider, numItems=>5)
+      - $this.group: new(apps:ServerReplicationGroup, provider=>$provider, numItems=>5)
       - $this.group.deploy()
       - $this.reports: []
       - inject($this.environment.reporter, report, $this, report)
diff --git a/meta/io.murano.applications/manifest.yaml b/meta/io.murano.applications/manifest.yaml
index f3470cd55..26d7e1f5c 100644
--- a/meta/io.murano.applications/manifest.yaml
+++ b/meta/io.murano.applications/manifest.yaml
@@ -32,6 +32,10 @@ Classes:
   io.murano.applications.Event: events.yaml
 
   io.murano.applications.ServerGroup: servers.yaml
+  io.murano.applications.ServerList: servers.yaml
+  io.murano.applications.CompositeServerGroup: servers.yaml
+  io.murano.applications.SingleServerGroup: servers.yaml
+  io.murano.applications.ServerReplicationGroup: servers.yaml
   io.murano.applications.ServerProvider: servers.yaml
 
   io.murano.applications.Installable: component.yaml