There is no doubt that 5G technology is a key enabler for the digital transformation and will unify communications in the next decade. After 2025 5G will be a mainstream technology connecting everyone with everything everywhere. However, the initial deployment of every new communication technology represents a huge economic challenge, particularly when existing technologies, such as 4G/LTE,  are already doing a very good job. So looking at 5G we have to look at it from two opposite angles that illustrate the complexity and current dilemma; 5G evolution vs. revolution. On the one hand 5G has to interoperate seamlessly with existing 4G and NB-IOT networks in order to benefit from 4G coverage, but to extend capacities where needed in the so-called Non-Standalone Architecture (NSA). However, the full potential of low-latency communications with 5G could only be exploited in the Standalone Architecture (SA) mode where 5G New Radio (NR) is combined with a “clean slate” Service-Based Network Architecture (SBA), exploiting the amazing customization features of software-based networks. In addition, global 5G standardization is in full swing and only 3GPP Release 16 and later releases will be able to fulfill the various requirements from the different 5G vertical domains. So the key question is “when and how to start with 5G?”