Page History

...

Div

id	who-hub-for
class	section

Div

class	container

Div

class	cols align-items-center

Div

class	col-4 text-center

HTML Image

src	https://ec.europa.eu/digital-building-blocks/sites/download/attachments/565379323/illu-national-coordination-groups.png
alt	illustration of a writing hand

Html-bobswift

<div class="col-8">

<h2>Who is the Once-Only Hub for?</h2>
<div class="who-hub-for-container">
<p><strong>Implementers from EU Member States</strong>, building and maintaining the Once-Only Technical System. A single environment providing them with information and access to services.</p>
<p><strong>Anyone</strong> can browse the Hub to learn more about the system, program and the benefits for them. </p>
</div>

</div>

Div

id	technical-documentation
class	section

Documentation

<p class="lead">The technical and operational specifications

of the Once-Only Technical

System, laid down in the Commission’s Implementing Regulation ((EU) 2022/1463) setting out the system, are complemented by detailed, non-binding technical design documents jointly prepared by the Commission and Member States.</p><div class="card-grid"> <div class="card-grid-body"> <p><small>Chapter 1</small></p> <h3 class="h5">Introduction - High Level Architecture</h3> <p>This chapter introduces the high-level architecture of

System</h2>
<p class="lead">The Once-Only Technical System (OOTS) is a technical framework for data sharing. Citizens and businesses will be able to request official documents (known as “evidence”) to complete administrative procedures allowing people to study, work, live and retire in other EU countries. The decentralised architecture connects public authorities, so they can exchange evidences (official documents) at the citizen's request.</p>
<p class="lead">The citizen or business is identified and, having actively confirmed that they wish to use the Once-Only Technical System

and the key concepts and themes found in the subsequent chapters.</p> </div> <div class="card-grid-footer"> <p>Release date: <strong>October 2022</strong></p> <p><a class="btn primary" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/x/WoUvHQ"><span>View chapter</span><span class="ico-cta"></span></a><

, is shown a list of the types of document that are possible to be retrieved directly from data sources abroad. The citizen will then select which documents they wish to retrieve from the data sources.</p>
</div>
</div>



<div class="

card-grid

cols">

<div

<div><p class="

card

text-

grid-body"> <p><small>Chapter 2</small></p> <h3

right"><a class="

h5

btn ghost"

>User Identification, Authentication and Record Matching</h3> <p>This chapter explains how those submitting or receiving evidences through the Once-Only Technical System are identified and authenticated.</p>

 href="#"><span>Download the OOTS Guidance Report</span><span class="ico-download"></span></a></p></div>
</div>

<div class="

card-grid-footer

cols">

<p>Release date: <strong>October 2022</strong></p> <p><a

<div><img class="

btn primary

img-fluid"

target

src="

_blank" href="

https://ec.europa.eu/digital-building-blocks/sites/

x/mYUvHQ"><span>View chapter</span><span class="ico-cta"></span></a></p>

download/attachments/565379323/diagram-how-does-it-work.png" alt=""></div>
</div>

</div>
</div>

Html-bobswift

<div id="architectural-design" class="section">
<div class="container">

<div class="cols">
<div class="col-9">
<h2>Architectural design

Div

class	container

Div

class	cols

Div

class	col-9

Html-bobswift

Div

style	margin-top:-3rem;
class	cols

Div

class	col-4

Html-bobswift

Div

class	col-4

Html-bobswift

Div

id	technical-documentation
class	section

Div

class	container

div

Div

class	cols

Div

class	col-49

Documentation

Html-bobswift

<div<p class="card-grid">
<div class="card-grid-body">
<p><small>Chapter 3</small></p>
<h3 class="h5">Common Services</h3>
<p>This chapter looks at the Common Services (provided by the Commission) necessary for the proper execution of the evidence exchange process.</p>
</div>
<div class="card-grid-footer">
<p>Release date: <strong>October 2022</strong></p> 
<p><a class="btn primary" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/x/vYUvHQ"><span>View chapter</span><span class="ico-cta"></span></a></p>
</div>
</div>

lead">The technical and operational specifications of the Once-Only Technical System, laid down in the Commission’s Implementing Regulation ((EU) 2022/1463) setting out the system, are complemented by detailed, non-binding technical design documents jointly prepared by the Commission and Member States.</p>

Div

style	margin-top:-3rem;
class	cols

Div

class	col-4

Html-bobswift

<div class="card-grid">
<div class="card-grid-body">
<p><small>Chapter 4<1</small></p>
<h3 class="h5">Evidence Exchange<>Introduction - High Level Architecture</h3>
<p>This chapter introduces evidence exchange inthe high-level architecture of the Once-Only Technical System, and whichthe iskey basedconcepts onand bilateralthemes datafound exchangein betweenthe relevantsubsequent authoritieschapters.</p>
</div>
<div class="card-grid-footer">
<p>Release date: <strong>October 2022</strong></p>
<p><a class="btn primary" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/x/4IUvHQWoUvHQ"><span>View chapter</span><span class="ico-cta"></span></a></p>
</div>
</div>

Div

class	col-4

Html-bobswift

<div class="card-grid">
<div class="card-grid-body">
<p><small>Chapter 5<2</small></p>
<h3 class="h5">Data Models<>User Identification, Authentication and Record Matching</h3>
<p>This chapter looksexplains athow thethose data models that streamline the exchange of evidences, together with a methodology for defining new data models and code listssubmitting or receiving evidences through the Once-Only Technical System are identified and authenticated.</p>
</div>
<div class="card-grid-footer">
<p>Release date: <strong>October 2022</strong></p> 
<p><a class="btn primary" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/x/T4YvHQmYUvHQ"><span>View chapter</span><span class="ico-cta"></span></a></p>
</div>
</div>

Div

class	col-4

Html-bobswift

<div class="card-grid">
<div class="card-grid-body">
<p><small>Chapter 6<3</small></p>
<h3 class="h5">OOTS Guidance & UX Recommendations<>Common Services</h3>
<p>This chapter provides an overview of how the Once-Only Technical System works as part of the wider Single Digital Gateway and looks at the first set of UX recommendationslooks at the Common Services (provided by the Commission) necessary for the proper execution of the evidence exchange process.</p>
</div>
<div class="card-grid-footer">
<p>Release date: <strong>October 2022</strong></p> 
<p><a class="btn primary" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/x/P4CYI"><span>Vieweuropa.eu/digital-building-blocks/sites/x/vYUvHQ"><span>View chapter</span><span class="ico-cta"></span></a></p>
</div>
</div>

Div

class	cols

Div

class	col-4

Html-bobswift

<div class="card-grid">
<div class="card-grid-body">
<p><small>Chapter 4</small></p>
<h3 class="h5">Evidence Exchange</h3>
<p>This chapter introduces evidence exchange in the Once-Only Technical System, which is based on bilateral data exchange between relevant authorities.< chapter</span><span class="ico-cta"></span></a></p>
</div>
</div>

Div

class	cols text-right

Div

Html-bobswift

<div class="card-grid-footer">
<p>Release date: <strong>October 2022</strong></p>
<p><a class="btn ghostprimary" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/x/PQF1Fg4IUvHQ"><span>View all latest chapter releases<chapter</span><span class="ico-cta"></span></a></p>
</div>
</div>

Div

html-bobswift

class	col-4

Html-bobswift
<div class="

cols

card-grid">
<div class="

col

card-grid-

9

body">

<h2>Architectural design of the Once-Only Technical System</h2> <p class="lead">The Once-Only Technical System (OOTS) is a technical framework for data sharing. Citizens and businesses will be able to request official documents (known as “evidence”) to complete administrative procedures allowing people to study, work, live and retire in other EU countries. The decentralised architecture connects public authorities, so they can exchange evidences (official documents) at the citizen's request.</p> <p class="lead">The citizen or business is identified and, having actively confirmed that they wish to use


<p><small>Chapter 5</small></p>
<h3 class="h5">Data Models</h3>
<p>This chapter looks at the data models that streamline the exchange of evidences, together with a methodology for defining new data models and code lists.</p>
</div>
<div class="card-grid-footer">
<p>Release date: <strong>October 2022</strong></p> 
<p><a class="btn primary" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/x/T4YvHQ"><span>View chapter</span><span class="ico-cta"></span></a></p>
</div>
</div>

Div

class	col-4

Html-bobswift

<div class="card-grid">
<div class="card-grid-body">
<p><small>Chapter 6</small></p>
<h3 class="h5">OOTS Guidance & UX Recommendations</h3>
<p>This chapter provides an overview of how the Once-Only Technical System

,

is

works

shown

as

a

part

list

of the

types

wider

of

Single

document

Digital

that

Gateway

are

and

possible

looks

to

at

be

the

retrieved

first

directly from data sources abroad. The citizen will then select which documents they wish to retrieve from the data sources

set of UX recommendations.</p>
</div>

</div>

<div class="

cols"> <div><p

card-grid-footer">
<p>Release date: <strong>October 2022</strong></p> 
<p><a class="

text-right"><a class="btn ghost

btn primary" target="_blank" href="

#"><span>Download the OOTS Guidance Report<

https://ec.europa.eu/digital-building-blocks/sites/x/P4CYI"><span>View chapter</span><span class="ico-

download

cta"></span></a></

p><

p>
</div>
</div>

<div

Div

class	cols text-right

Div

Html-bobswift
<p><a class="

cols"> <div><img class="img-fluid" src

btn ghost" target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/

download/attachments/565379323/diagram-how-does-it-work.png" alt=""></div> </div> </div> </div>

x/PQF1Fg"><span>View all latest chapter releases</span><span class="ico-cta"></span></a></p>

Div

id	services
class	section

Div

class	container

Div

class	cols

Div

class	col-9

Html-bobswift
<h2>Common services</h2> <p class="lead opacity-75">The Commission provides the following Common Services to allow for the proper exchange of evidences.</p>

Div

class	cols gap-lg

Div

class	col-4

Html-bobswift

<div class="card-grid">
<div class="card-grid-body"> 
<p><img aria-hidden="true" alt="" src="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/565379323/ico-article-secondary.svg"></p> 
<h3 class="h5">Data Service Directory (DSD)</h3>
<p class="opacity-75">The Data Service Directory is a common service that acts as a catalogue of evidence types that can be provided upon request.</p>
</div>
<div class="card-grid-footer">
<p><span class="badge sm">In development</span></p>
<p class="opacity-50">Expected release date: <strong>December 2022</strong></p>
</div>
</div>

Div

class	col-4 col-separator-before col-separator-after

Html-bobswift

<div class="card-grid">
<div class="card-grid-body">
<p><img aria-hidden="true" alt="" src="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/565379323/ico-assured-workload-secondary.svg"></p>
<h3 class="h5">Evidence Broker (EB)</h3>
<p class="opacity-75">The Evidence Broker is an authoritative system that maps specific data sets as evidence types that prove specific requirements.  </p>
</div>
<div class="card-grid-footer"> 
<p><span class="badge sm">In development</span></p> 
<p class="opacity-50">Expected release date: <strong>December 2022</strong></p>
</div>
</div>

Div

class	col-4

Html-bobswift

<div class="card-grid">
<div class="card-grid-body">
<p><img aria-hidden="true" alt="" src="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/565379323/ico-dns-secondary.svg"></p>
<h3 class="h5">Semantic Repository (SR)</h3>
<p class="opacity-75">The Semantic Repository is a common service that acts as a data portal for the technical system.</p>
</div>
<div class="card-grid-footer"> 
<p><span class="badge sm">In development</span></p> 
<p class="opacity-50">Expected release date: <strong>December 2022</strong></p>
</div>
</div>

...

Page tree

Versions Compared

Old Version 272

New Version 273

Key

Documentation

Documentation