Sitecore is a CMS (Content Management System) with many options. Sitecore is your solution if you have extensive E-commerce and need to streamline your brand's activities.
This means that with Sitecore you have the best prerequisites for successful integrations too, among other things, CRM systems (Customer Relations Management) such as Salesforce. You have a platform that is super scalable so you can quickly expand, add, or simplify. The platform thus gives you great opportunities to manage your activities that are spread all over the world, and you can have a multi-presence with several languages, several sites, and several channels.
All in all, Sitecore is a comprehensive system that you can still edit yourself, and your content managers can work with the platform independently. You control the content across all your channels, and you can design and set up the content yourself. So you have high flexibility and independence with Sitecore.
You should choose Sitecore because you want high flexibility across channels while having a great deal of independence in your daily work.