  In this paper, we introduce a simple and efficient approach for the general
reduction of one-loop integrals. Our method employs the introduction of an
auxiliary vector and the identification of the tensor structure as an auxiliary
propagator. This key insight allows us to express a wide range of one-loop
integrals, encompassing both tensor structures and higher poles, in the Baikov
representation. By establishing an integral-by-parts (IBP) relation, we derive
a recursive formula that systematically solves the one-loop reduction problem,
even in the presence of various degenerate cases. Our proposed strategy is
characterized by its simplicity and effectiveness, offering a significant
advancement in the field of one-loop calculations.
