This thesis deals with an optimal strategy choice of a company. The issues of products and services, marketing and mainly strategic management with emphasis on optimal strategy choice of a company are described in theoretical part. There are introduced fundamental methods of internal and external strategic analysis. With use of mentioned facts a program for support of strategic management is proposed. This program is aiming to make well structured and quantifiable methods of strategic analysis easier and more clear, based on which it is possible to define and choose an optimal strategy of a company.