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Single Digital Portal gov.gr

The Single Digital Portal gov.gr aims to transform the citizen's (or business) life events to specific services provided by the Public information systems.


Basic functions

The Single Digital Portal gov.gr incorporates functionality from the other components of the architecture, such as the Identification Center and the Notification Center, while the basic functions that it will provide horizontally for all hosted services concern the provision of electronic services, with the following properties

  • The safe entry of the citizen, in the government services and their electronic identification utilizing the methods that will be provided by the Identification Center.

  • The provision of a single access point and identification function (Single Sign On) for all services provided by the public information systems, ie without the need for repeated identification in each of them.

  • The routing of notifications, responses and results to requests submitted by the citizen through the Notification Center.

Common service systems

The implementation of digital transformation recognizes common functionalities and infrastructures required for a large number of substantial interventions in policy areas. In the context of a well-designed design, these common functionalities and infrastructures must be grouped in digital service delivery systems which in a uniform way will provide horizontal services in all the projects and systems that are developed and will operate in the individual policy areas.

Identification Center

In order to securely communicate with users, as well as to ensure their access to their services and data, it is necessary to utilize the authentication services for transactions through digital media.

The building block of electronic identification will be utilized by the Single Digital Portal gov.gr and the Notification Center, providing unique identification service point (Single Sign-On) on all digital services available through gov.gr.

Notification Center

The Notification Center will be the main channel of communication between the state and the citizen. It will provide the necessary functions so that government agencies and state bodies can inform the citizens about issues that concern them

Indicatively, these issues may include reminders of citizen obligations to the state, updates on the progress of citizen requests, personalized updates (eg, preventive medicine programs, vaccinations), and messages of general interest, such as instructions for weather events and announcements of the launch of new digital services. Notifications can be sent, depending on their content, through different communication channels, such as e-mail, text messages on mobile phones (SMSs), and push notifications  in smartphone applications.


The Register is an authentic list of specific types of information. Electronic registries (e-Registries) are registries for which the authenticity, integrity, availability and authorized access to the information held as well as the accountability of their administrators are ensured by digital technologies.

The existing electronic registers of the Public Administration exceed 250 and are constantly increasing, as the implementation of digital solutions and services is evolving. About ten of them are of particular importance to the Public Administration and the citizen, as they carry primary and authentic information that is frequently used or repeated in other registers and electronic services. The Basic Registers include the Tax Register, the General Commercial Register (GEMI), the Citizens' Register, the police IDs or the Register of Residence Permits and the Special Identity Cards for expatriates for third country citizens, the Social Security Register, the National Registry of Roads and Numbers, the Register of General Government Bodies and Services, the Register of Driving Licenses and the Register of Car Traffic Licenses.

Interoperability Center

The Interoperability Center ensures the governance of the interoperability framework, the functional interconnection, identification and synchronization of information between key registers, as well as the facilitation of interoperability by policy axis.

A basic principle when designing new electronic services is interoperability-by-design, which concerns both the technical and the semantic and organizational level. At the same time, the utilization of reusable structural elements creates economies of scale and facilitates the sustainability of implementations. At the same time, approaches based on microservices architecture will be utilized, which will operate asynchronously and will communicate with each other through programming interfaces (APIs). Also, for the flexible, secure exchange of data between public systems, in the role of content intermediary, the National Data Corridor infrastructure will be implemented, which concerns a central (national level) installation of a data streaming platform (Data Streams).

Open data

The data collected by the Public Administration are not always easily accessible and in many cases, their quality does not allow their effective use. This needs to change with the introduction and adoption by all government actors of a national data development strategy, which will be aligned with the European Data Strategy.

Open access, reuse and maximization of Public Sector data will enhance participation, transparency and public scrutiny and promote entrepreneurship, ensuring that businesses, especially start-ups and new technologies, will have the necessary raw material to develop value-added services. The strategic focus is on developing actions for the gradual utilization of data as a fundamental infrastructure and development resource. At the technological level, the upgrade of the national open data portal and its interconnection with the European portal is preferred. An important intervention is also the implementation of the Greek Metadata Register (as defined in the Interoperability Register) and a central Service Portal of the Basic Registers, which will be a central access point to the basic registers of the country, will provide information about them and will facilitate search and their interconnection.

Theme Data Repositories

It has been proposed at European level to create a "common data space" in the EU, based on the principle of data sharing between businesses as well as between businesses and the Public Sector. The open disposal, re-use and maximum re-use of Public Sector data is an important catalyst for digital transformation, ensuring, among other things, that companies will have the necessary raw material to develop value-added services.

Data from systems: sensors from smart cities and smart buildings, transport and public transport systems, road network operation, sensors and meters from utility and telecommunications service providers, digital cultural heritage resources, delinquency data and work data in machine-readable form through standardized programming interfaces, fueling the ingenuity and creativity of businesses to develop new services and products.