What are the best practices for installing shower backer board to ensure a waterproof and durable shower enclosure?

The best practices for installing shower backer board to ensure a waterproof and durable shower enclosure include properly sealing seams and corners with waterproof tape or sealant, using corrosion-resistant screws to secure the backer board, and ensuring the backer board is installed over a waterproof membrane. Additionally, it is important to follow manufacturer guidelines and recommendations for installation to achieve the best results.