To get the best help for your situation, first answer the questions on the guide's start page.
Ensure technical interoperability
What is technical interoperability
Data is technically interoperability when the data transfer technologies used by the sender and the recipient have been coordinated. Interoperability is realised when information systems can automatically exchange information with each other.
Technical interoperability requires interoperable
- data formats
- interface structures
- error processing
- databases
- information systems
- telecommunications connections.
Technical interoperability also requires the coordination of the records to be transferred and their parameters.

Technical data communication solution
When data is transferred technically between organisations, a decision must be made on which channel, i.e. technical data transfer solution, is used to transfer or make the data available to another organisation.
Selecting a communication channel depends on
- whether you sharing, utilising or opening data?
- the format in which the data will be shared: as file packages or via the API
- what type of data is being transferred: for example, a secure channel is needed for the transfer of personal data.
The Suomi.fi Data Exchange Layer for secure data transfers
Suomi.fi Data Exchange Layer is a uniform and secure solution that enables your organisation to manage data transfer related to electronic transactions with other organisations.
The Data Exchange Layer is used when
- the aim is to transfer data with public administration organisations
- the transfer of data requires a secure method.
Read more about the Suomi.fi Data Exchange Layer.Opens in a new window.
Suomi.fi Open Data for the utilisation of open data
The service has an ever-growing number of different open datasets. You can browse the data or search for datasets using keywords or categories.
Browsing and downloading datasets is free of charge and does not require registration.
Suomi.fi Open Data for the publication of open data
Your organisation can use Suomi.fi Open Data when it intends to share data openly.
You can publish the following in Suomi.fi Open Data
- datasets in file format
- datasets through the API
- examples on the use of open data.
It is important that your organisation describes the data it has opened in a comprehensive manner. This way, potential users of the data can find it, understand its purpose and utilise it.
Use the Test Material Service for testing
The Test Material Service produced jointly by the Digital and Population Data Services Agency, the National Land Survey of Finland and the Finnish Patent and Registration Office contains artificial test materials that correspond to the population, properties and companies of a medium-sized Finnish city and their relationships.
The service is suitable for testing the digital e-services in both public administration and the private sector.