Many modern "updated" versions of the Ansoff matrix simplify his work to the point of inaccuracy. The original text outlines the specific risk profiles and managerial requirements for each quadrant with a depth that modern summaries cannot match.
If you want “Corporate Strategy by Ansoff” ideas without the 1960s prose: corporate strategy igor ansoff pdf
Searching for the is essentially a search for the "source code" of strategic planning. Without it, you are merely using a cheat sheet (the Matrix). With it, you understand the logic loops behind the decisions. Many modern "updated" versions of the Ansoff matrix