In DatoCMS you can add to your models a special field type called Slug to let your editors specify the URL permalink of a record.
A slug field is linked to another single-line string field of the same model, usually the title. As soon as the editor begins to type the title, the slug field will be filled with an URL-friendly version of the same string:
The nice thing about slug fields is that, if the editor subsequently updates the record's title, the slug won't change, preserving all the SEO benefits.
Within the Admin area > Item types section, create a new "Blog post" model:
Then add a Title field:
Now you can add a Slug field (you can find it under the SEO group):
Make sure, under the Presentation tab, to select the title field as its reference: