diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea5ebf9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,205 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+x64/
+bld/
+[Bb]in/
+[Oo]bj/
+
+# Roslyn cache directories
+*.ide/
+
+# AWS
+*.aws-sam/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+#NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding addin-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+## TODO: Comment the next line if you want to checkin your
+## web deploy settings but do note that will include unencrypted
+## passwords
+#*.pubxml
+
+# NuGet Packages Directory
+#packages/*
+## TODO: If the tool you use requires repositories.config
+## uncomment the next line
+#!packages/repositories.config
+
+# Enable "build/" folder in the NuGet Packages folder since
+# NuGet packages use it for MSBuild targets.
+# This line needs to be after the ignore of the build folder
+# (and the packages folder if the line above has been uncommented)
+#!packages/build/
+
+!src/packages/**/*.dll
+!src/packages/**/*.pdb
+
+# Windows Azure Build Output
+csx/
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+*.Cache
+ClientBin/
+[Ss]tyle[Cc]op.*
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.pfx
+*.publishsettings
+node_modules/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# LightSwitch generated files
+GeneratedArtifacts/
+_Pvt_Extensions/
+ModelManifest.xml
+src/packages/EventStore.Client.3.3.1/lib/net40/EventStore.ClientAPI.xml
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# Vagrant VM files
+.vagrant
+vagrant/dbv/data/meta/revision
+
+# Visual Studio 2015 cache/options directory
+.vs/
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea5ebf9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,205 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+x64/
+bld/
+[Bb]in/
+[Oo]bj/
+
+# Roslyn cache directories
+*.ide/
+
+# AWS
+*.aws-sam/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+#NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding addin-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+## TODO: Comment the next line if you want to checkin your
+## web deploy settings but do note that will include unencrypted
+## passwords
+#*.pubxml
+
+# NuGet Packages Directory
+#packages/*
+## TODO: If the tool you use requires repositories.config
+## uncomment the next line
+#!packages/repositories.config
+
+# Enable "build/" folder in the NuGet Packages folder since
+# NuGet packages use it for MSBuild targets.
+# This line needs to be after the ignore of the build folder
+# (and the packages folder if the line above has been uncommented)
+#!packages/build/
+
+!src/packages/**/*.dll
+!src/packages/**/*.pdb
+
+# Windows Azure Build Output
+csx/
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+*.Cache
+ClientBin/
+[Ss]tyle[Cc]op.*
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.pfx
+*.publishsettings
+node_modules/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# LightSwitch generated files
+GeneratedArtifacts/
+_Pvt_Extensions/
+ModelManifest.xml
+src/packages/EventStore.Client.3.3.1/lib/net40/EventStore.ClientAPI.xml
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# Vagrant VM files
+.vagrant
+vagrant/dbv/data/meta/revision
+
+# Visual Studio 2015 cache/options directory
+.vs/
\ No newline at end of file
diff --git a/AggregateConsistencyBoundary.csproj b/AggregateConsistencyBoundary.csproj
new file mode 100644
index 0000000..a71d4c2
--- /dev/null
+++ b/AggregateConsistencyBoundary.csproj
@@ -0,0 +1,12 @@
+
+
+
+ net5.0
+
+
+
+
+
+
+
+
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea5ebf9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,205 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+x64/
+bld/
+[Bb]in/
+[Oo]bj/
+
+# Roslyn cache directories
+*.ide/
+
+# AWS
+*.aws-sam/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+#NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding addin-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+## TODO: Comment the next line if you want to checkin your
+## web deploy settings but do note that will include unencrypted
+## passwords
+#*.pubxml
+
+# NuGet Packages Directory
+#packages/*
+## TODO: If the tool you use requires repositories.config
+## uncomment the next line
+#!packages/repositories.config
+
+# Enable "build/" folder in the NuGet Packages folder since
+# NuGet packages use it for MSBuild targets.
+# This line needs to be after the ignore of the build folder
+# (and the packages folder if the line above has been uncommented)
+#!packages/build/
+
+!src/packages/**/*.dll
+!src/packages/**/*.pdb
+
+# Windows Azure Build Output
+csx/
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+*.Cache
+ClientBin/
+[Ss]tyle[Cc]op.*
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.pfx
+*.publishsettings
+node_modules/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# LightSwitch generated files
+GeneratedArtifacts/
+_Pvt_Extensions/
+ModelManifest.xml
+src/packages/EventStore.Client.3.3.1/lib/net40/EventStore.ClientAPI.xml
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# Vagrant VM files
+.vagrant
+vagrant/dbv/data/meta/revision
+
+# Visual Studio 2015 cache/options directory
+.vs/
\ No newline at end of file
diff --git a/AggregateConsistencyBoundary.csproj b/AggregateConsistencyBoundary.csproj
new file mode 100644
index 0000000..a71d4c2
--- /dev/null
+++ b/AggregateConsistencyBoundary.csproj
@@ -0,0 +1,12 @@
+
+
+
+ net5.0
+
+
+
+
+
+
+
+
diff --git a/Shipment.cs b/Shipment.cs
new file mode 100644
index 0000000..d3978d7
--- /dev/null
+++ b/Shipment.cs
@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace AggregateConsistencyBoundary
+{
+ public class Shipment
+ {
+ private readonly IList _stops;
+
+ public Shipment(IList stops)
+ {
+ _stops = stops;
+ }
+
+ public bool IsComplete()
+ {
+ return _stops.All(x => x.Status == StopStatus.Departed);
+ }
+
+ public void Arrive(int stopId)
+ {
+ var currentStop = _stops.SingleOrDefault(x => x.StopId == stopId);
+ if (currentStop == null)
+ {
+ throw new InvalidOperationException("Stop does not exist.");
+ }
+
+ var previousStopsAreNotDeparted = _stops.Any(x => x.Sequence < currentStop.Sequence && x.Status != StopStatus.Departed);
+ if (previousStopsAreNotDeparted)
+ {
+ throw new InvalidOperationException("Previous stops have not departed.");
+ }
+
+ currentStop.Arrive();
+ }
+
+ public void Pickup(int stopId)
+ {
+ var currentStop = _stops.SingleOrDefault(x => x.StopId == stopId);
+ if (currentStop == null)
+ {
+ throw new InvalidOperationException("Stop does not exist.");
+ }
+
+ if (currentStop is PickupStop == false)
+ {
+ throw new InvalidOperationException("Stop is not a pickup.");
+ }
+
+ currentStop.Depart();
+ }
+
+ public void Deliver(int stopId)
+ {
+ var currentStop = _stops.SingleOrDefault(x => x.StopId == stopId);
+ if (currentStop == null)
+ {
+ throw new InvalidOperationException("Stop does not exist.");
+ }
+
+ if (currentStop is DeliveryStop == false)
+ {
+ throw new InvalidOperationException("Stop is not a delivery.");
+ }
+
+ currentStop.Depart();
+ }
+ }
+}