This year, you hosted a small intimate dinner for your top $10$ clients and added a fun element of friendly competition to kick$-$off the year. For each successful referral that a client gives you $-$i$.$e$.,$ has to be onboarded $-$ you will give the referring client $1\%$ off their entire annual advisory fee. The client that refers the most will get that $1\%$ discount, as well as an additional $9\%$ for an annual advisory fee savings of $10\%$ as a way of celebrating your practice's $10-$year anniversary.

What type of marketing strategy did you just use?