Agile is a dynamic and innovative project management and product development approach widely adopted in the tech world. It emphasizes flexibility, collaboration, customer involvement and high responsiveness to changes. Agile approach breaks down large projects into smaller, manageable tasks which are tackled in short iterations or 'sprints'. This enables teams to reassess project direction and easily adjust based on regular feedback loops, leading to high-quality output and user satisfaction.

When companies ask for Agile skills, they typically seek individuals who not only understand the principles and methodologies of Agile such as Scrum, Kanban, and Lean, but also have experience in implementing them in real-world scenarios. These companies value professionals who can think quickly, adapt in real-time and embrace an ever-evolving business landscape.

Employers look for candidates who demonstrate strong leadership skills, problem-solving abilities, and excellent communication skills which are crucial in fostering a collaborative team environment - a key element of Agile. They also appreciate a candidate's ability to break down complex projects into simpler tasks, set realistic timelines, evaluate productivity and quality, and continuously improve through retrospective analysis.

To master Agile, it can be beneficial to have a foundation of related skills such as:

1. Project Management - A basic understanding of managing projects, organizing tasks and ensuring they’re completed on schedule is important.

2. Software Development - Most Agile roles are in Software Development, so experience in this field will be helpful. Understanding the basics of coding and software design can provide valuable context for Agile management.

3. Communication Skills - Agile teams must communicate effectively and often, so strong verbal and written communication skills are essential.

4. Problem-Solving Skills - Agile is all about managing change and solving problems quickly and efficiently.

5. Collaboration Skills - With Agile's team-based approach, being able to work well with others and contribute to a collaborative environment is key.

6. Leadership Skills - As Agile professionals often play a leadership role, experience in motivating teams, making decisions and managing conflicts is beneficial.

Certifications such as Certified Scrum Master (CSM), Agile Certified Practitioner (PMI-ACP), or Certified SAFe Agilist can further endorse your Agile skills and stand out in your application. Remember, Agile is not just a skill, it's a mindset of continuous learning and adapting to change which is the cornerstone of most successful modern tech companies.