Johnny Appleseed planting apple trees for kids to eat

https://discuss.online/post/34408013

You can’t take the seed of a tasty apple, plant it and expect the tree to have similarly tasting apples. If you want to duplicate a tree, you need to take a twig and plant it on top of an existing tree (if anyone could tell me what this is called in English, thank you).
Grafting?
Take a small branch of a tree you like, splice it using a technique, take a small young tree of same type but different variety, splice it, attach branch of variety you like, seal. Nurture it, and the branch uses the donor tree to pull up nutrients and water, and the branch then grows into a whole new tree. It’s cloning, but grafting helps it move faster and without as much risk.
They were responding to the original version of my comment where I asked what the technique was called.