Читать книгу Google Cloud Certified Professional Cloud Architect Study Guide - Dan Sullivan - Страница 58

In addition to specifying business and product strategy, business requirements may state things that you should consider in application design, such as a preference for managed services and the level of tolerance for disruptions in processing. Implicit in business requirements is the need to minimize costs while meeting business objectives.

One measure of costs is total cost of ownership (TCO). TCO is the combination of all expenses related to maintaining a service, which can include the following:

 Software licensing costs

 Cloud computing costs, including infrastructure and managed services

 Cloud storage costs

 Data ingress and egress charges

 Cost of DevOps personnel to develop and maintain the service

 Cost of third-party services used in an application

 Charges against missed service-level agreements

 Network connectivity charges, such as those for a dedicated connection between an on-premises data center and Google Cloud

While you will want to minimize the TCO, you should be careful not to try to minimize the cost of each component separately. For example, you may be able to reduce the cost of DevOps personnel to develop and maintain a service if you increase your spending on managed services. Also, it is generally a good practice to find a feasible technical solution to a problem before trying to optimize that solution for costs.

Some of the ways to reduce costs while meeting application design requirements include managed services, using preemptible virtual machines, and data lifecycle management. Google also offers sustained uses discounts and reserved VMs, which can help reduce costs.