7. Automated infrastructure. The process of deployment, scaling and rollbacks should be automated, which allows you to quickly roll back automatically, fix the isolation of the service in the code.
8. There is a denial of work. To visualize failures, you can look at Jaeger and Prometheus, to localize problems, services should be isolated, present one single service, which allows isolating, limiting the harmful effects on other services in case of failure and automating the rollback.
9. Evolving design. The system builds up processes in the form of services – overgrows them, and no change in its structure is required. Neal Ford and Rebeca Parsons in Microservices as an Evolving Architecture focus on continuous improvement.
A view from the heights of a business and a business architect
Business architecture (Enterprise Architect) is the IT architecture of the entire company. She operates with abstractions and entities at the business level, these are strategies, business processes, services and the like. The systems and interconnections that support the work of a business are called the IT landscape, because it contains many systems that do not form a single whole, connected by business processes in which they participate and which are not limited to them. The business architect (Enterprise Architect) works at this level, adjusting the current landscape to the current needs of the business. Often, for traditional companies that did not develop in the high-tech sphere in the blue ocean, it is attracted when the IT landscape has developed and difficulties arise in its development and adaptation to changing conditions, a minimally capable product (MVP) is created in technological startups. The business architect of the corporate IT landscape should solve problems with a low rate of making changes (due to the impossibility of local testing, postponing distributed changes, breaking down after rolling distributed changes) – time to market, quick adaptation to user expectations – customer experience and cost – cost. The first is solved by the architect’s consistent efforts to restore order, reducing coherence and complexity, which simplifies and accelerates the process of making changes, and, like in any high-tech field, where the main cost is the man-hours of workers, reduces the cost. More and more often the requirements are not provided to the architect, he is connected at the very early stages of their formation, after his possibilities are very limited. To do this, he needs to actively participate in negotiations and meetings in order to adjust the requirements. Then form several possible solutions with different levels of complexity, from simple and fast but not effective ("solutions on the knee"), through the optimal, and to large-scale and flexible. Next, form an architectural committee on which to propose solutions for the selection and adjust the selection towards the optimal one.