In response to https://twitter.com/sebwebdev/status/421695119226851330

DDD_interfaces.php

<?php

interface UbiquitousLanguage
{
    public function enter(BoundedContext $boundedContext);
}

interface BoundedContext
{
    public function getNames();
    public function assessWith(ContextMap $contextMap);
}

interface ContinuousIntegration
{
    public function unifyModelFrom(BoundedContext $boundedContext);
}

interface ContextMap
{
    public function freeTeamsToGo(SeparateWays $separateWays);
    public function relateAs(CustomerSupplier $customerSupplier);
    public function overlapThrough(SharedKernel $sharedKernel);
    public function overlapAs(Conformist $conformist);
}

interface Conformist { }

interface SeparateWays { }

interface PublishedLanguage extends UbiquitousLanguage { }

interface AntiCorruptionLayer { }

interface SharedKernel { }

interface CustomerSupplier { }

interface Trolling {}