The Scrum framework is an agile methodology used to manage and control software development. As its name suggests, which was borrowed from rugby where teams huddle together to set strategies, Scrum facilitates teamwork and manages problems more efficiently. The differentiating factor in Scrum is its emphasis on creating value through collaboration, adaptability, and delivering a potentially re-usable product increment after each iteration or "sprint".

The impact of Scrum on Strategic Management cannot be overstated. When it comes to driving Operational Excellence or juggling multiple, high-stakes projects under the awning of Portfolio Management, Scrum delivers. Given its inherent nature of agility, responsiveness, and collaboration, Scrum fine-tunes the managerial machine to optimal productivity. It not only breaks down complex tasks into manageable bits, but also provides a clear line of sight on Performance Management and risk mitigation.

Fundamentally, Scrum provides Fortune 500 executives with the tools to navigate the Digital Transformation wave. It fosters collaboration and transparency, promotes manageability of complex tasks, and provides the adaptability needed in today's dynamic market. It's not surprising then that many top-tier companies are incorporating Scrum into their strategic toolbox. Here are some ways they are making use of this agile methodology:

• Adaptability: With its iterative sprint cycles, Scrum allows for improved adaptation to market shifts and customer demands. It facilitates quick change implementation thus reducing time to market.
• Productivity and Efficiency: By breaking down complex projects into manageable tasks, resources are used more efficiently, and productivity increases.
• Enhanced Communication and Collaboration: Regular scrum meetings lead to more effective communication, minimizes misunderstandings, and fosters a culture of collaboration and team growth.

While Scrum began in software development, lessons learned and its principles can be applied beyond tech departments. To implement Scrum effectively across the organization, following key considerations should be kept in mind:

1. Adapting to Change: The biggest hurdle to implementing Scrum is resistance to change. A clear communication of the benefits and the vision can aid in overcoming this resistance.
2. Training and Learning: Adequate training must be given to all team members, and learning must be seen as a continuous process.
3. Leadership Commitment: Implementing Scrum organization-wide requires commitment from the top. Leaders must model the way, and recognize and address any issues that may arise promptly.

The Strategic Planning and management processes for large corporations can be a herculean task, made less daunting with the adoption of Scrum principles. From fostering innovation-management target=_blank>Innovation Management, enhancing Customer Experience, to charting Digital Transformation, Scrum serves as a valuable tool to navigate the complex corporate landscape. Admittedly, it's not a universal remedy, but the evidence of Scrum’s value towards sustainable corporate performance is too compelling to ignore.