Software preservation is the process of ensuring the long-term accessibility and usability of software applications, data, and systems. This includes preserving the code, documentation, and overall functionality of software to ensure that it remains usable and accessible in the future. Software preservation is important for maintaining access to historical software, ensuring compatibility with current hardware and software systems, and preserving cultural and intellectual heritage. It involves tasks such as archiving, documentation, emulation, and migration to new systems to ensure that software remains usable and accessible for future generations.