  We present MultivariatePowerSeries, a Maple library introduced in Maple 2021,
providing a variety of methods to study formal multivariate power series and
univariate polynomials over such series. This library offers a simple and
easy-to-use user interface. Its implementation relies on lazy evaluation
techniques and takes advantage of Maple's features for object-oriented
programming. The exposed methods include Weierstrass Preparation Theorem and
factorization via Hensel's lemma. The computational performance is demonstrated
by means of an experimental comparison with software counterparts.
