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diff.html
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<a class="logo" href="https://www.w3.org/">
<img src="https://www.w3.org/StyleSheets/TR/2016/logos/W3C" alt="W3C" width="72" height="48">
</a>
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<p>
</p>
<h1 class="title p-name" id="title">
Web
of
Things
(WoT)
Architecture
</h1>
<h2 id="w3c-first-public-working-draft-14-september-2017">
<abbr title="World Wide Web Consortium">
W3C
</abbr>
<del class="diff-old">Editor's
</del>
<ins class="diff-chg">First
Public
Working
</ins>
Draft
<del class="diff-old">12
</del>
<time class="dt-published" datetime="2017-09-14">
<ins class="diff-chg">14
</ins>
September
2017
</time>
</h2>
<dl>
<dt>
This
version:
</dt>
<dd>
<del class="diff-old">https://w3c.github.io/wot-architecture/
</del>
<a class="u-url" href="https://www.w3.org/TR/2017/WD-wot-architecture-20170914/">
<ins class="diff-chg">https://www.w3.org/TR/2017/WD-wot-architecture-20170914/
</ins>
</a>
</dd>
<dt>
Latest
published
version:
</dt>
<dd>
<a href="https://www.w3.org/TR/wot-architecture/">
https://www.w3.org/TR/wot-architecture/
</a>
</dd>
<dt>
Latest
editor's
draft:
</dt>
<dd>
<a href="https://w3c.github.io/wot-architecture/">
https://w3c.github.io/wot-architecture/
</a>
</dd>
<dt>
Editors:
</dt>
<dd class="p-author h-card vcard" data-editor-id="74112">
<span class="p-name fn">
Kazuo
Kajimoto
</span>,
<a class="p-org org h-org h-card" href="https://www.panasonic.com/">
Panasonic
Corp.
</a>
</dd>
<dd class="p-author h-card vcard" data-editor-id="75998">
<span class="p-name fn">
Matthias
Kovatsch
</span>,
<a class="p-org org h-org h-card" href="https://www.siemens.com/">
Siemens
AG
</a>
</dd>
<dd class="p-author h-card vcard" data-editor-id="92757">
<span class="p-name fn">
Uday
Davuluru
</span>,
<a class="p-org org h-org h-card" href="https://www.lemonbeat.com/">
RWE
AG
</a>
</dd>
<dt>
Contributors:
</dt>
<dd>
<a href="https://github.com/w3c/wot-architecture/graphs/contributors">
In
the
GitHub
repository
</a>
</dd>
<dt>
Repository:
</dt>
<dd>
<a href="https://github.com/w3c/wot-architecture/">
We
are
on
GitHub
</a>
</dd>
<dd>
<a href="https://github.com/w3c/wot-architecture/issues">
File
a
bug
</a>
</dd>
</dl>
<p class="copyright">
<a href="https://www.w3.org/Consortium/Legal/ipr-notice#Copyright">
Copyright
</a>
©
2017
<a href="https://www.w3.org/">
<abbr title="World Wide Web Consortium">
W3C
</abbr>
</a>
<sup>
®
</sup>
(
<a href="https://www.csail.mit.edu/">
<abbr title="Massachusetts Institute of Technology">
MIT
</abbr>
</a>,
<a href="https://www.ercim.eu/">
<abbr title="European Research Consortium for Informatics and Mathematics">
ERCIM
</abbr>
</a>,
<a href="https://www.keio.ac.jp/">
Keio
</a>,
<a href="http://ev.buaa.edu.cn/">
Beihang
</a>
).
<abbr title="World Wide Web Consortium">
W3C
</abbr>
<a href="https://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">
liability
</a>,
<a href="https://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">
trademark
</a>
and
<a rel="license" href="https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document">
permissive
document
license
</a>
rules
apply.
</p>
<hr title="Separator for header">
</div>
<section id="abstract" class="introductory">
<h2 id="abstract-0">
Abstract
</h2>
<p>
The
<abbr title="World Wide Web Consortium">
W3C
</abbr>
Web
of
Things
(WoT)
is
intended
to
enable
interoperability
across
IoT
Platforms
and
application
domains.
Primarily,
it
provides
mechanisms
to
formally
describe
IoT
interfaces
to
allow
IoT
devices
and
services
to
communicate
with
each
other,
independent
of
their
underlying
implementation,
and
across
multiple
networking
protocols.
Secondarily,
it
provides
a
standardized
way
to
define
and
program
IoT
behavior.
</p>
<p>
This
document
describes
the
abstract
architecture
for
the
<abbr title="World Wide Web Consortium">
W3C
</abbr>
Web
of
Things.
It
is
derived
from
a
set
of
use
cases
and
can
be
mapped
onto
a
variety
of
concrete
deployment
scenarios,
several
examples
of
which
are
given.
This
document
is
focused
on
the
standardization
scope
of
<abbr title="World Wide Web Consortium">
W3C
</abbr>
WoT,
which
consists
of
three
initial
building
blocks
that
are
briefly
introduced
and
their
interplay
explained.
</p>
<p>
The
WoT
Thing
Description
(TD)
provides
a
formal
mechanism
to
describe
the
network
interface
provided
by
IoT
devices
and
services,
independent
of
their
implementation.
Provision
of
a
TD
is
the
primary
requirement
for
a
device
to
participate
in
the
Web
of
Things.
In
fact,
defining
a
Thing
Description
for
an
existing
device
allows
that
device
to
participate
in
the
Web
of
Things
without
having
to
make
any
modifications
to
the
device
itself.
WoT
Binding
Templates
define
how
a
WoT
device
communicates
using
a
concrete
protocol.
The
WoT
Scripting
API—whose
use
is
not
mandatory—provides
a
convenient
mechanism
to
discover,
consume,
and
expose
Things
based
on
the
WoT
Thing
Description.
</p>
<p>
Other
non-normative
architectural
blocks
and
conditions
underlying
the
Web
of
Things
are
also
described
in
the
context
of
deployment
scenarios.
In
particular,
recommendations
for
security
and
privacy
are
included,
while
the
goal
is
to
preserve
and
support
existing
device
mechanisms
and
properties.
In
general,
<abbr title="World Wide Web Consortium">
W3C
</abbr>
WoT
is
designed
to
describe
what
exists
rather
than
to
prescribe
what
to
implement.
</p>
</section>
<section id="sotd" class="introductory">
<h2 id="status-of-this-document">
Status
of
This
Document
</h2>
<p>
<em>
This