npx create-strapi-app my-project` is a command to create a new Strapi project. Content management systems (CMS) have been at the forefront of content creation for nearly two decades, but they've evolved over time. New technologies have introduced changes in how CMSs are used, and some CMSs have decoupled where the content is managed from where it's displayed. To achieve better performance, higher reliability, greater security, and the freedom to display content wherever and however you want, you may need to move to a headless CMS. Headless CMSs can be either Git-based or API-driven. Git-based CMSs are built on the Git version control system (VCS) and allow easy management of content through Git functionalities. API-first CMSs work as unified pieces of software serving content through an Application Programming Interface (API). Each type of headless CMS offers benefits and drawbacks, with pros and cons varying greatly between them. The benefits of powering a CMS through Git include flexibility in content formatting, but also more responsibilities like handling SEO optimizations yourself. On the other hand, API-first CMSs offer scalability, flexibility for future planning, and access to opportunities that aren't possible with Git. However, they drive higher reliance on developers, are more closed, and come with higher costs. Static websites, e-commerce sites, multi-platform products, and content federation are some use cases where headless CMSs can make a huge difference in content creation and management.