The NIST National Cybersecurity Center of Excellence (NCCoE) is initiating the development of practices to ease the migration from the current set of public-key cryptographic algorithms to replacement algorithms that are resistant to quantum computer-based attacks. These practices will take the form of white papers, playbooks, and demonstrable implementations for organizations. In particular, the audience for these practices is intended to include organizations that provide cryptographic standards and protocols and enterprises that develop, acquire, implement, and service cryptographic products. This effort complements the NIST post-quantum cryptography (PQC) standardization activities.