We have successfully implemented Agile methodology in our projects. During our talks with our customer, we propose different models and we choose the best approach for project execution with approval from customer. We follow Agile Modeling which is a practice-based methodology for modeling and documentation of software-based systems. It is intended to be a collection of values, principles, and practices for modeling software that can be applied on a software development project in a more flexible manner than traditional modeling methods.
Agile software development refers to a group of software development methodologies based on iterative development, where requirements and solutions evolve through collaboration between self-organizing cross-functional teams. Agile methodology is an adaptive methodology, its people oriented. Some of the characteristics of the Agile methodology are

• Delivery frequently.
• Good ROI for client.
• Test frequently.
• Collaborative approach.

Agile methods generally promote a disciplined project management process that encourages frequent inspection and adaptation, a leadership philosophy that encourages teamwork, self-organization and accountability, a set of engineering best practices that allow for rapid delivery of high-quality software, and a business approach that aligns development with customer needs and company goals. Conceptual foundations of this framework are found in modern approaches to operations management and analysis, such as lean manufacturing, soft systems methodology, speech act theory (network of conversations approach), and Six Sigma.