It is hereby certified that Lefteris Sakellaris has successfully attended and completed the course: CS3.4: Introduction to web application development with Flask

which is offered by Mathesis MOOCs, developed in Crete University Press of the Foundation for Research and Technology - Hellas, with the lecturer Mr Dimitris Agelakis, developer / support technician of Mathesis platform.

The duration of the course was four weeks with an estimated study time of 60 hours needed to complete the course. The period of attendance and completion of the course was from 20/6/2023 to 30/9/2023. This course is offered via the platform OpenEdX/gr of Mathesis in compliance with all established technical and educational specifications. The assessment procedure is based on the honour code by which the participants commit to abide. The responsibility for the content of the course and its assessment lies exclusively with the lecturer. The final assignment was evaluated by the lecturer and his assistants.