[Maximillian Schwartzmuller] So in the previous section,
you did learn how to fetch data with NextJS,
how to fetch data either from some external source
with help of an HTTP request that's sent on the server side,
or directly from some source you control,
like from a database with code on the server site.
In this section, we'll now explore data mutation,
so how you can change data and store new data
because of course, most web applications,
or at least many web applications
don't just need to fetch data,
but also at some point change or add some data.
And therefore, you'll learn about different options
you have for manipulating data when working with NextJS
and most importantly, you will learn how to use a feature
called Server Actions to manipulate
and update data in NextJS.