In the world of content management systems (CMS), there are plenty of options to pick. However, if you are searching for a modern and flexible CMS that can handle all of the content needs effectively, I will recommend to use Sanity.

Benefits of using Sanity:

• Flexible content modeling:
  You can define own content schema by using a simple and intuitive interface in which custom content types that match your specific needs can be easily created.
  
• Real-time collaboration:
  You can collaborate with your team in real-time, allowing to collective effort on the content creation and editing. It also offers a powerful revision history feature which all changes made can be tracked.
  
• Scalability:
  With Sanity's flexible architecture and cloud-based infrastructure, it can scale to meet your needs for managing content, regardless of how large or complex your project is.
  
• Customization:
  You can easily customize your content with the provided tools and features. Sanity allows you to add custom fields and even integrate with other services.
  
  

After installation, you can define the schema of the content with specific type and the inclusive fields, which provides great flexibility to developers.

You can manage all the contents in one single place by connecting a specific API path (here is `/studio`) to your website.

With Sanity, all contents are treated as data. Hence, you can query the data (here is using GROQ) as needed and to be used in your front-end side of development.

Useful resources:

sanity.io
next-sanity npm
schema