This course will teach you how to design futureproof systems that meet the requirements of IoT systems: systems that are secure, interoperable, modifiable and scalable. Moreover, you'll learn to apply best-in-class software architecture methods to help you design complex IoT and other applications. Lastly, you'll come to understand the business impact of the technical decisions that you make as an IoT system architect. You'll learn all about software architecture in the next 5 weeks! In the first week, you'll discover why having a well-designed architecture is important and which challenges you might come across while developing your architecture. By the end of the second week, you'll already be able to write your own requirements! In the third and fourth week, you will learn how to correctly write quality attributes and quality attribute scenarios for a specific case. In the last week, you'll learn to describe your own patterns and tactics and see how they're used in an Android framework.
Second Interview
Loading...
Do curso por EIT Digital
Software Architecture for the Internet of Things
139 classificações
Na lição
Quality Attributes
Up till now, we have been talking about quality in an informal way. However, if you want to build systems that support the required qualities you will need a way to express those quality attributes and understand how you can achieve them. After this module you should be able to formulate your own quality requirements. We will also study 2 qualities that are especially relevant for Internet of Things: interoperability and modifiability.
Conheça os instrutores
Frank GielenProfessor
UGent/IBCN: Internet Based Communication Networks
You have developed a solution.
What was the problem?
The concrete problem we saw with,
with Share&Charge is two-fold.
One is, with our app,
we enable private customers and
small and medium enterprises to share their charging port with others.
And therewith, we increase the overall number of charging ports available in the public.
To give you a number, in Germany,
we have like around two and a half thousand charging ports in the public domain.
And we are trying,
we are striving for making
400 private charging ports available until the end of the year.
The second one is that in
the immobility domain you have a lot of different charging port operators,
and on the other hand you have
immobility providers who provide their customers with mobility.
So, basically, it's a card or an app where they can charge.
And we still have a problem that there is no direct possibility to transact with each
other and that would obviously tremendously and exponentially
increase with the cost of the next year with immobility kicking off.
So, if I understand you well, Share&Charge,
it's just first step in a far broader ambition?
So we strongly believe,
if we are talking about autonomous cars in the near future that a car,
obviously, is not only charging but also it needs to park itself,
need to pay toll.
You want to rent it out, perhaps,
your car to others and all that needs to
be supported by the underlying IT infrastructure.
So, absolutely, Share&Charge is just the beginning.
And what is the ultimate goal?
The ultimate goal is,
for us on the one hand,
creating this open mobility system together with a partner,
which is a non-profit infrastructure,
with all the partners interested like energy companies,
mobility companies, car manufacturers, insurance companies.
And to build on top of it,
for profit use cases.
And that is what we ought to prove with Share&Charge.
So, we showed that working,
and we started with a public Ethereum Blockchain,
a non-profit infrastructure, and we
put on top of it a for profit use case with Share&Charge.
So, we proved like the whole value chain.
And so, for us,
as Motionwerk, vision from like profit perspective is,
that we are one of the trusted partners helping other companies to
build software solutions on top of this non-profit blockchain infrastructure.
Let's get back particularly to Share&Charge.
Is this a complex thing to develop?
There are three dimensions, I would say.
One is a technology dimension,
one is a customer and partner dimension,
and one is the regulatory dimension.
And the technology dimension is
obviously already quite complex because we are testing a new technology,
and we've tried to combine it with existing technology.
So, we integrate the back end of existing charging port operators to the blockchain.
The second one is obviously that we need to get customers on board,
that we need to find partners and excite them about what we are doing.
And that obviously, also takes time to step into a totally new ecosystem.
And the third one, which is probably at least as difficult as the other two,
it's a regulatory part,
and then especially around the question of payment and accountancy.
So what we develop is this immobility token,
where the end customers now top up their wallet via PayPal or Visa.
And what then happens is that the euros are sent to an escrow account, to a bank.
And we create immobility tokens,
so base tokens on the blockchain.
Then, customer doesn't see that,
he or she just sees euros in a wallet.
But basically, from that moment,
we just work with the tokens and that is also what enables them to transact directly,
so e-card driver, to transact directly with a charging port operator.
So, in the back,
we really only use tokens.
Until that moment where they take out
the tokens again so they want the euro back on their account.
We delete the tokens in the system and we give them back the euros from the account.
And to set up this whole system, obviously,
required quite a lot of legal work and understanding
of financial regulation and what applies to us and what it doesn't.
And in the next step now, we're about to roll it out all over Europe.
So there's the same question again,
in which countries can we roll it out?
Where do we need to take care of?
So that is highly complex.
And because it's interface also between lawyers and new technology.
So, it's about lawyers need to understand the technology.
Technology just need to understand the legal requirements.
There's a high risk of friction between these two.
The second one is, to give you a concrete example, is about accountancy.
So, we are paying gas in order to use the public Ethereum blockchain.
So, you need to pay something for each transaction.
So now, my accountants ask me, literally,
I need to invoice for this gas price.
And obviously, it's a the totally globally decentralized network.
So, we have no clue on who actually, again, did the transaction.
And so, we have nobody who can give us an invoice.
So the question to the accountant is, how do we do it?
How do we deal it with VAT, with value added tax?
How do we do the accounting?
That's just one dimension which indicates that the whole system we
work currently within is just not ready for this decentralized technology future yet.
A motion back, is a bunch of youngsters with big ambitions?
I would say young people are very inspired
by the vision of this open mobility system, on the one hand.
And, I also must admit some of the
techies' very much inspired by the blockchain technology.
And myself, for example, I left Innogy,
so large corporate because I'm also really excited about what we're doing here.
And also, to feel my own impact.
So basically, if I'm not coming to work one day,
it really has an impact.
And luckily enough, also the other way around.
So, we can really move things and bring things more forward here.
And everybody counts and that's an amazing feeling.
Can you say something about the business model that you need?
So, we have, for Share&Charge,
where it's about renting out your charging port and how that can charge there.
We have a transaction fee model.
But, we rather see ourselves as a software, as a service company.
So basically, it's a showcase for us.
We show it to other companies and we want to be the one really building trust
forward solutions on basis of a blockchain for various mobility companies.
And that's where we want to earn the money with in the longer term.
What are the future plans of Motionwerk?
We would really want to build this ecosystem.
So, that's one of the major tasks on the open mobility system.
Then the second one around charging is that we are now one to
incorporate more and more charging port operators and immobility providers.
So, we really want to roll it out in Europe.
We are already testing in California.
So that would be probably also a next step to go to the US.
And that you can keep control over the go to market.
Absolutely. And also, the quality and then, I mean,
getting partners on-board in the first time is one thing but then also
keep them on-board and really offer them a value.
That's obviously not done like this.
Life this a challenge.
Okay. Thank you very much.
Thank you.
Explore nosso catálogo
Registre-se gratuitamente e obtenha recomendações, atualizações e ofertas personalizadas.
O Coursera proporciona acesso universal à melhor educação do mundo fazendo parcerias com as melhores universidades e organizações para oferecer cursos on-line.
© 2019 Coursera Inc. Todos os direitos reservados.
