With the rapid development of SaaS, the most pressing issue is the introduction of a complete application development platform, the platform must be able to support the industry, enterprises, various application requirements of the business model.Platform as a service (referred to as PaaS), also known as platform as a service extension model came into being, it expands on-demand service, customers can customize the application according to their needs, at a lower cost and faster response speed, to provide timely and thoughtful service to the final consumer.Agile Notes will help you to complete a revolution in application delivery way.