How to build a succession planning strategy that prepares future leaders today

Leadership changes may be expected, but the timing rarely is. Retirements, sudden exits, reorganizations, and new business demands can all create leadership vacuums with little warning. The cost of being unprepared when key talent inevitably leaves is substantial: A Deloitte study on leadership succession planning found that although most leaders consider it urgent, only 14% believe their organizations do it well. That mismatch highlights the risk: Companies know the importance of succession, but many still fail to plan until it’s too late.

A proactive succession planning strategy helps you avoid that last-minute scramble. It builds a leadership and overall talent pipeline years in advance, protects business performance when a role opens, and gives future leaders time to grow before they take on more responsibilities.

Why you should start succession planning now

Succession planning helps companies identify and develop internal talent to fill key leadership roles as they turn over. But many organizations still treat it as an annual exercise focused only on top executives. Doing that may leave large parts of the business without a backup plan and forces companies to rely heavily on external recruitment. It also sends a message to employees that their leadership opportunities are limited or unclear.

HR consultant Danielle Melendy, in her Cornerstone article on succession planning metrics, describes succession planning as “the crux of your company’s talent management strategy.” She argues that effective development should extend across all organizational levels, not just into the C-suite. This perspective reframes succession as a continuous system that supports long-term stability and business success.

The following trends make early planning essential:

• Business continuity depends on it. Organizations with a deep talent bench make more confident promotion decisions and have fewer disruptions during leadership transitions.

• Employees expect opportunity. Cornerstone’s analysis of internal mobility trends shows that workers who lack visibility into career paths are 61% more likely to consider leaving.

• Structure drives equitable outcomes. Deloitte’s research suggests that formal succession planning leads to more fair and predictable promotion decisions.

Why to start succession planning early

Proactive succession planning gives organizations time to prepare people gradually and thoughtfully. By doing so, companies help improve their corporate culture in a variety of ways.

You plan for the roles of the future, not just today’s org chart

Research from the Center for Creative Leadership shows that organizations with long-range succession planning strategies build leadership teams that can adapt even as business needs change and strategic goals evolve.

You develop employees with intention

Readiness for larger job roles is a long-term process, not a last-minute event. Skills like strategic thinking, communication, and decision-making grow through repeated experience. Prioritizing continuous learning helps build the capabilities needed for future leadership roles.

You broaden your internal leadership pipeline

When planning extends beyond senior executives, organizations discover emerging leaders in a variety of roles who might otherwise be overlooked. This also helps you retain the employees with the highest potential.

Using data and AI to identify future leaders

Good succession planning requires more than intuition alone. Data and structured assessments can help organizations promote qualified people based on readiness as well as avoid gender, racial, and other types of bias.

To use AI effectively, Melendy recommends evaluating talent across five metrics which include potential, readiness, performance, risk of loss, and impact of loss. This model helps leaders distinguish between less strong performers and succession candidates with true leadership potential.

A platform such as Cornerstone Succession brings these insights into one place. It provides tools such as:

• Talent grids that compare potential and performance side by side

• Risk indicators for high-impact roles without a designated successor

• Retention signals to identify employees who may be at risk of leaving

• AI-powered suggestions based on skills, experience, and performance patterns

AI should automate and bring together insights, not replace, human-led decision-making. The combination of data and human judgment gives companies a more complete view of which employees are ready to grow into larger roles.

Build a succession pipeline that works for you

Once you’ve identified the critical areas of your business and the talent within them, the next phase is to map out a practical, long-term strategy. An effective succession plan requires careful attention to both current and future needs.

1. Define critical roles and future needs

The most critical roles are those where turnover would slow the business or create risk. Cornerstone’s succession planning templates provide frameworks for reviewing these positions and identifying gaps in the talent bench. Remember to look at both hard and soft skills lacking in your current talent. When auditing your organization, look for positions that:

• Influence customer relationships

• Hold institutional knowledge

• Lead revenue-generating functions

• Are difficult to hire for externally

• Support safety or operational continuity

2. Map successors and broader talent pools

Moving beyond one-to-one replacement thinking creates a stronger pipeline. Consider identifying three or more candidates, depending on the level of the role. You won't need a large talent pool for the C-suite. Make sure to plan estimates of readiness timelines for each successor, such as, are they ready now or will they be in a couple of years?

Cornerstone’s succession management capabilities bridge the gap between role-specific replacements and broader talent pool strategies. By formalizing this process, you help ensure leadership continuity across the organization even as needs evolve.

3. Connect your backup plan to your growth plan

Succession and internal mobility work together to keep your best people from leaving. Cornerstone’s talent mobility research shows that employees who see open pathways are significantly more engaged and less likely to take a job somewhere else.

Preparing successors through effective employee development

Employee development is the part of succession planning that turns staff into successors. A successful succession plan only works if you prepare employees for their next role. Here’s how:

Create a clear roadmap

Each potential successor should be given a development plan that clarifies the skills required to upskill, assignments that build real experience, and access to mentorship or coaching support and training programs.

Offer cross-functional and rotational experience

Leadership readiness improves when employees better understand other aspects of the business, like a finance team member spending a quarter working in sales, an operations manager joining a supply chain task force to help reduce factory shipping delays, or a senior engineer joining the procure team to better negotiate contracts with technical vendors.

Mentorship and sponsorship

Mentors help successors prepare, while sponsors help successors become visible, and in the workplace, both matter.

Stay on top of succession planning

It’s great to get the ball rolling, but succession plans lose value quickly if they’re not maintained. As noted by success planning expert, Aaron Sorensen, "Succession planning can't be a static thing. You have to be constantly thinking about the opportunities to grow talent within your business and revisit your strategy every year, just like you do with your greater business strategy."

A realistic schedule for staying on top of it includes quarterly or biannual talent reviews, annual sessions to check for bias, and regular updates to employee readiness. Tools within Cornerstone Succession allow leaders to update these decisions more easily than spreadsheet-based processes. To track the health of your succession plan, focus on these four key metrics:

• Internal fill rates, which is how often you hire from within vs. outside

• Readiness depth, which is how many prepared successors you have for each role

• Diversity of successor pools, including both backgrounds and perspectives

• Time-to-fill, which is the number of days it takes to find and hire a new person for the job

Case study: How one large lumber manufacturer connects employee development with succession

Interfor, one of North America’s largest lumber producers, uses Cornerstone to strengthen workforce capability and provide transparency for successful career growth. In the company’s published workforce development story, talent specialist Kiana Fraser explains how even one small change made succession conversations more effective:

“We recently added a feature within our development plans where employees can indicate relocation preferences. This helps us build talent pools and improve succession planning by knowing who is open to moving for career advancement.”

Read the full story

Interfor’s leadership training and other development pathways illustrate how day-to-day development choices contribute to effective succession planning. The company hits specific promotion targets, uses a structured talent review process, and they check in on the success of their plan multiple times a year.

Case Study: How the right technology transforms succession planning and management strategy

Prior to using Cornerstone succession software, drugstore giant Walgreens couldn’t close the deal on creating a formal plan. Using the Succession platform, the company was able to identify their core needs and possible skill and people gaps, which addresses both growth and future planning.

Read the full story

“Our company is moving very fast,” says Daniela Hautzinger, director of change management at Walgreens. “As we move from store growth to going global, the talent piece is critical for ensuring our growth is sustainable. With Cornerstone, we’re helping employees have a voice in their career paths and creating a more formal, consistent method of moving our talent initiatives forward.” 

Putting succession planning into action

You don’t need to redesign your whole system to make succession planning more effective. These seven quick steps can help you get started:

1. Identify your top 10 most critical roles

1. Evaluate successors with the five-metric model

1. Create development plans for each successor

1. Connect those plans to training, projects, and cross-functional opportunities

1. Run quarterly readiness checks using your talent data

1. Use AI insights in Cornerstone Succession to spot gaps and risks earlier

1. Align business leaders on expectations and timelines

As Cornerstone CEO Himanshu Palsule has said, “People want to grow. They want the freedom and skills to take on new challenges in the workplace.” Succession planning helps give that growth direction while protecting business continuity.

Frequently asked questions

What is a succession planning strategy?

It’s a proactive roadmap that identifies and prepares people to step into critical roles as a business grows or changes. It combines hands-on development with talent data to make sure a business has a steady pipeline of employees who are prepared to take on bigger roles and more responsibility.

How early should we begin succession planning?

Ideally, any organization should begin successor identification two to three years ahead of expected transitions. According to one Deloitte study on succession readiness, waiting until a leader departs to start a talent search leads to rushed or less effective hires.

What metrics should we use to evaluate successors?

To get a full picture of your talent pool, Cornerstone highlights five key areas: potential, readiness, performance, risk of loss, and impact of loss.

How does internal mobility support succession planning?

Internal mobility strengthens your talent bench by connecting employees with new professional opportunities and helping them move into new roles. Research shows that visibility into career paths increases retention and development. I

Are there tools or templates available for succession planning?

Yes. Cornerstone’s succession planning templates provide several resources to help refine the process, including a matrix to plot employees based on their performance and potential, a talent bench review template, a succession planning process map, and individual development plans.