SOLID: Solid is a platform in continous change and evolving everyday, this makes developing our application quite difficult, we have to manage many concepts and changes quite fast. Also the lack of documentation of some moodules add some programming risks and algo makes the task more difficult.

TypeScript: A web language in which we are not native, most of our group is Java native,we had to use JavaScript (compatible with TypeScript) in order to optimize our compatibility with most of the code available in the SOLID platform and other modules. Using TypeScript also adds the problem that most of the examples that we can try to use are not writen in TS and oly on JavaScript.

RDF: Usede for modeling our data, this is a techlogy that we are not familiar with.

Turtle: A container for RDF data, this allows to focus only on Turtle but add the risk of not knowing "what is under the hood".

Angular: Web framework, this allows a faster development but also adds the complexity of managing the framework.