This is a low spreading Sedum with interesting smooth leaves (setting it apart from the very common ‘Dragon’s Blood’ type Sedums) and pink stems. Fairly normal Sedum-like yellow flowers are nice but I’m definitely growing this for the leaves. And the stems. And the leaves in the winter. And why not, for the flowers too.
I’ll probably grow this one around the base of my taller Irises (old yellow and blue).