For a company’s position in regional, national, and international competition, it is crucial to anticipate development trends and the resulting or changing problems in order to prepare for expected situations. However, this forward-looking orientation is not only indispensable for companies, but also for research institutes, educational institutions, ministries, disaster management, and national defense. The methods described in this chapter examine the situations and processes of interest from various perspectives, thus enabling specific insights. Predominantly intuitively oriented methods require relatively little effort and provide quick statements. This includes, for example, destructive brainstorming. The Delphi technique and scenario technique use expert statements, but proceed with more reliable statements in multi-level decision spaces. The portfolio technique bases its statements primarily on economic considerations, while the envelope curve theory essentially relies on technical parameters. The relationships in systems and processes are particularly taken into account in system analysis, technology impact assessment, process analysis, and product line analysis. In their practical application, combinations of several methods are possible and sensible, depending on the expected scope of the statements.