A MACH architecture gives companies the freedom to choose the best tools on the market, and therefore provide a landscape that makes it easy to add, replace or remove technologies in the future. 

Microservices

Microservices are systems that are independently developed, deployed and managed. Thus, you can change and improve separate services without having to affect the entire system. One microservice is designed to perform a single function like a wishlist or checkout. The parts communicate and exchange data, forming an union but remaining a separate nature. 

API-first

An Application Programming Interface (API) makes it easier to integrate different tools, so you can quickly interact with other products and services. It gives developers the freedom to choose the front-end framework of their liking, and gives marketers the data that they need for their analysis. Being API-first is crucial for the MACH architecture in order to establish a robust and future-proof digital ecosystem. This is because all the microservices communicate with each other through APIs.