The older infrastructure can create a problem, and even it served the organization for years, the older foundation will have stability problems, and it may also face the challenge of lack of support. Using an infrastructure-as-a-code with microservice in another step towards the future continuous innovation it change the development lifecycle. It helps to adapt to changing market and customer needs quickly.
By moving to microservices architecture from traditional infrastructure, and organization should have the configuration management, foundations of automation and continues delivery in place. It enables them to cope up with increase operational workloads that micro service bring.