It depends on what you know.
- WordPress is easy for techy and not techy.
- Joomla is easy for techy.
- CodeIgniter PHP Framework is good for a small team (1–2 persons)
- Laraver PHP Framework is good for bigger teams. (best PHP Framework)
Drupal is difficult but secure and good for teams
If you want to go very fast:
If you are a University, or good techs:
- Drupal (Very secure, you need time to learn)
- Laravel + VueJS
All about is for PHP, you can also use
- Java (for big companies)
- JS options (VueJS, e.t.c.)
- and more
- keep it simple
- use platform that already has solved your project logic