Flexible development methodologies help to solve major problems, however, it is worth noting that the cascade model (waterfall) also has its advantages. In some cases, the most appropriate is to use hybrid methodologies in conjunction with Agile + cascade model + MSF + RUP. Lack of quality assurance and reliability of programs due to lack of guarantees, absence of errors in programs until the formal surrender of programs to customers.
This problem is not a problem solely related to software development. Quality Guarantee – this is a problem of selecting suppliers (not the product). The process of choosing the necessary methodology for Stormwater Management Software can affect the performance of all software – its flexibility, cost and functionality.
It is also important to adapt the Stormwater Management Software for integrating SaaS solutions as well as provide various scenarios in case of problems with the provider of the SaaS solution.
IT migration can be complicated since we switch the data platform provider to that of another, with various associated problems (compatibility, look for the client). Under the SaaS, the customer is bound to his supplier.
The same service requires the operation of two computers (client or service) instead of one. This can increase power consumption, especially when a client-intensive and non-shared server machine is used. There is also a third player, the internet service provider (ISP), because it is he who provides the communication between the client and the service provider.
So any offline interruptions are equal to the total shutdown of the activity of the company, hence the need to provide redundant lines with a fixed minimum rate provided by the network provider.
Types of providers
There are typically four types of enterprise ASP: the specialist or functional ASP: provides a single application, such as the payment process by credit card. The vertical ASP provides a solution as a package for a specific type of customers. The ASP business: provides a full spectrum of solutions and the local ASP provides services to SMEs in a limited geographical area.
The leading provider of SaaS solutions were startups of the internet, young innovative companies. Most important is a good and proper planning of the development process. For this, there are already a number of process models from which to choose.
One problem is that the correctness of a program can only be proved against an appropriately formalized specification. But can be as complicated and prone to error in individual cases to create such a specification of how the programming of the program itself.
The development of more abstract programming paradigms and programming styles such as functional programming, object oriented programming, Design By Contract and the aspect-oriented programming is used among other things to prevent errors.
