During my presentation, I will be discussing about the way layers work with one another, implementing good practices and where the processing should be done. The management of the resources in the context of each layer is another important issue. While talking about the database, back-end and front-end, certain questions will be raised: Why should I implement that?', 'When should I implement that?', 'Do I have the resources?', 'What are the alternatives?' and most important 'What are the risks?'.