AWS Lambda is a serverless computing platform that allows to run code without having to worry about the underlying infrastructure. This can help application in several ways:

1. Cost-Effective: With Lambda, you only pay for the amount of compute time your code uses, making it cost-effective for running small functions and applications that are not continuously running. This can help reduce operational costs significantly.

2. Scalability: Lambda can automatically scale up or down based on demand, ensuring that applications can handle any amount of traffic without requiring any manual intervention.

3. Faster Deployment: With Lambda, developers can quickly deploy and test their code changes without having to worry about provisioning servers or infrastructure. This can help speed up the application development process.

4. Microservices: Lambda allows developers to break down applications into smaller, more manageable functions or microservices, making it easier to develop, deploy and maintain complex applications.

5. Event-Driven Architecture: Lambda supports event-driven architecture, which means that code is executed in response to events such as database updates, file uploads, or API calls. This enables developers to build highly responsive, event-driven applications that can process large amounts of data in real-time.

Overall, AWS Lambda can help change application dynamics by providing a cost-effective, scalable, and easy-to-use platform for building and running applications. This allows developers to focus on building great applications without having to worry about infrastructure management.