Peptides are short chains of amino acids linked by peptide bonds, playing a crucial role in biological processes and pharmaceutical applications. These molecules can be natural or synthesized to mimic the functions of specific peptides found in nature. Peptides exhibit diverse properties such as immunomodulatory effects, signaling molecule activities, and structural roles. They find extensive use in drug development due to their high specificity and selectivity towards target proteins, making them ideal for treating various diseases including cancer, diabetes, and neurodegenerative disorders. Additionally, peptides are utilized in wound healing products, cosmetics, and food additives for their bioactive properties. Their modular structure allows for the creation of novel peptide libraries, facilitating the discovery of new therapeutic agents with unique functionalities tailored to specific medical needs.