In companies, a one-size-fits-all decision-making process can lead to inappropriate application of heavyweight processes to all decisions, including lightweight ones. Two-way door decisions should generally be made by individuals or small teams, while one-way door decisions should be elevated to senior executives for careful scrutiny.

If you're unsure who the decision maker is, it's likely you. It's better to act decisively than to slow down the company by following a process without making a decision.

To maintain high velocity in decision-making, it is important to create a culture that encourages quick and responsible decisions at all levels of the organization, as demonstrated by Amazon's ability to remain decisive despite its size.

Decisions can be categorized as two-way door decisions, which are reversible, and one-way door decisions, which are irreversible. It's crucial to recognize the difference, as one-way door decisions require careful consideration and should be made deliberately.

When making decisions, delegate low-impact tasks where you have low confidence, but retain control over high-stakes decisions where your conviction is strong.

When developing a strategy, it's essential to have one decider in the organization to make clear choices about priorities.

It's important to avoid decision-making anti-patterns like taking too long to respond or deferring decisions by involving others unnecessarily.

There's no right or wrong decision in product management, only slow and fast decisions; making fast decisions allows for quicker corrections.

Decisiveness is vital for founders; they need to make quick decisions about hiring and firing to maintain momentum and morale within their company.