What product strategy frameworks do you know?

Among popular frameworks for product strategy, the following can be highlighted:

• OKR (Objectives and Key Results) — helps set ambitious goals and measure their achievement through key results.
• Lean Startup — focuses on rapid hypothesis testing and minimal viable product (MVP) to reduce risks.
• Business Model Canvas — a visual tool for describing and analyzing a product's business model.
• Value Proposition Canvas — helps understand what value the product provides to customers.
• Porter’s Five Forces — analyzes the competitive environment to develop strategy.
• Ansoff Matrix — a tool for choosing growth strategies (market development, product development, etc.).

The choice of framework depends on the product stage, company goals, and market specifics.