Borrowing from a similar question:
The Open Geospatial Consortium (OGC) exists to define interface standards such as the Web Mapping Service (WMS) standard, or Web Feature Service (WFS) standard. These are standards that define how programmers should create software to provide such a service.
So for example, OGC defines the WMS standard, programmers write a piece of software called MapServer that can create a WMS service according to this standard, lastly I as a user take this MapServer software, install it on a server add my data and create a service.
Similarly other programmers can write a client (for example QGIS or ArcMap) that understand the OGC WMS standard, such that my MapServer WMS service can be viewed and queried.
The IEEE Standards Association and the OGC operate in a similar fashion, but the IEEE standards are standards that apply generally at a lower level, for example deal with specifying standards that deal with hardware.
So to answer your OGC question, do
they provide standards like IEEE or do
they provide standards that should be implemented with your application it is closer to the latter.