WordPress is a CMS (Content Management Systems). 

• About 43% of all Web is using WP.
• Woocommerce is a very popular plugin that is an e-shop app.
• The majority of WP Devs have no degree in Computers.
• The first Dev task is for the most to modify functions.php  (theme file) or to write a child theme

WordPress is:

1. -Free
2. -Easy to learn and to use
3. -Easy to maintain
4. -It has more than 45000 plugins, thousands of themes
5. -it is a Framework that can cover all the needs of a customer because we can write code and modify its operation
6. The maximum number of users that I have learned was 38000 in one installation.