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Interoperability

Highlights

Digital Transformation

Portugal and the “once-only” principle in the European Union

Update   12.05.2026

5 Minute(s)

The OOTS prevents the submission of documents already held by authorities.

Digital Transformation

CUSP: Single Catalogue of Public Services

Update   12.05.2026

4 Minute(s)

The CUSP centralises digital public services in Portugal.

Digital Transformation

iAP: website and services

Update   12.05.2026

5 Minute(s)

The iAP enables the digital exchange of documents within Public Administration.

Digital Transformation

OOTS in production in the European Union

Update   12.05.2026

4 Minute(s)

By 2026, the EU aims to connect all national authorities to the OOTS.

Impact

Impact in Numbers

The digitalisation of public services in Portugal is reflected in concrete figures. These indicators reflect the current status of Public Administration digital projects and are updated as the projects evolve.

Update 12.05.2026

  • 89 M

    messages and information exchanged

  • 69 M€

    value of payments processed

  • 26 M

    SMS messages sent and received

Opportunity

Has your organisation already joined the Interoperability Platform?

Joining is simple and allows you to eliminate the exchange of paper documents, reduce operational costs and integrate systems without replacing existing solutions.
Learn more

Support platforms

Use, adapt, implement

Portugal develops and provides resources, tools and initiatives to support the digital transformation of Public Administration and society.

Interoperability Platform (iAP)

Shared platform for integration, messaging, payments and authentication for Public Administration. Available to public bodies and private entities with legal support. Certified.

Mosaico

The common model for the design and development of digital public services. Includes the technical framework for integration with the OOTS and Public Administration common platforms.

Single Catalogue of Public Services (CUSP)

Centralises information on all Public Administration digital services. Allows each entity to list, describe and integrate its services, ensuring a consistent omnichannel service experience for citizens and businesses.