Mae Porthol Brexit (y Porthol) yn rhan o'r ystyriaeth ehangach o'r cytundeb cyllideb dwy flynedd rhwng Llywodraeth Cymru a Plaid Cymru i gynorthwyo busnesau i baratoi at Brexit.
The Brexit Portal (Portal) is part of the wider consideration of the two-year budget agreement between the Welsh Government and Plaid Cymru to support businesses with Brexit preparations.