public static function createFromConnectionString($connectionString)
    {
        $tokenizedSettings = self::parseAndValidateKeys($connectionString);

        // Devstore case
        $matchedSpecs = self::matchedSpecification(
            $tokenizedSettings,
            self::allRequired(self::$_useDevelopmentStorageSetting),
            self::optional(self::$_developmentStorageProxyUriSetting)
        );
        if ($matchedSpecs) {
            $proxyUri = Utilities::tryGetValueInsensitive(
                Resources::DEVELOPMENT_STORAGE_PROXY_URI_NAME,
                $tokenizedSettings
            );

            return self::_getDevelopmentStorageAccount($proxyUri);
        }

        // Automatic case
        $matchedSpecs = self::matchedSpecification(
            $tokenizedSettings,
            self::allRequired(
                self::$_defaultEndpointsProtocolSetting,
                self::$_accountNameSetting,
                self::$_accountKeySetting
            ),
            self::optional(
                self::$_blobEndpointSetting,
                self::$_queueEndpointSetting,
                self::$_tableEndpointSetting
            )
        );
        if ($matchedSpecs) {
            return self::_createStorageServiceSettings(
                $tokenizedSettings,
                self::_getDefaultServiceEndpoint(
                    $tokenizedSettings,
                    Resources::BLOB_BASE_DNS_NAME
                ),
                self::_getDefaultServiceEndpoint(
                    $tokenizedSettings,
                    Resources::QUEUE_BASE_DNS_NAME
                ),
                self::_getDefaultServiceEndpoint(
                    $tokenizedSettings,
                    Resources::TABLE_BASE_DNS_NAME
                )
            );
        }

        // Explicit case
        $matchedSpecs = self::matchedSpecification(
            $tokenizedSettings,
            self::atLeastOne(
                self::$_blobEndpointSetting,
                self::$_queueEndpointSetting,
                self::$_tableEndpointSetting
            ),
            self::allRequired(
                self::$_accountNameSetting,
                self::$_accountKeySetting
            )
        );
        if ($matchedSpecs) {
            return self::_createStorageServiceSettings($tokenizedSettings);
        }

        self::noMatch($connectionString);
        return null;
    }