Where can I buy TUSD?

Could you please enlighten me on the avenues to acquire Tether USD (TUSD)? I've been hearing a lot about its stability and potential use in decentralized finance. I'm particularly interested in knowing the most reliable and secure platforms to make this purchase. Are there any specific exchanges or marketplaces you recommend? Additionally, I'd like to understand the steps involved in the purchasing process and any associated fees or commissions I should be aware of. Your guidance in this matter would be greatly appreciated.