An important objective in ESPON 2020 is to ensure that all ESPON tools, using the data and metadata made available by the ESPON Database / Portal, should be directly accessed and connected to the ESPON Database and not maintained in separate databases or data repositories. To achieve this, we use Web Services to enable third-party applications to access ESPON data in an interoperable and seamless manner. The main functionalities that can be provided by such Web services are:
(1) data discovery
(2) data visualisation
(3) data filtering, and
(4) data download.
There are two types of Web services developed and described in detail in the next sections: OGC Web Services and REST Web Services.