Installing a step

I’m wanting to put a step in by our front door. The drive is all concrete and I’ve placed some blocks down as a temporary measure to gauge the height requirements. See pic.

Would I be best off cutting a rectangle out of the concrete and hardcoring it (I’ve got loads) and then lay the blocks on that as opposed to laying straight onto the concrete?

Thanks

Anyone able to advise on this?

Thanks.

No, just build off the concrete