When using a Docker Swarm versus a single Docker host, there is a paradigm change. Instead of talking of individual containers that run processes, we are abstracting away to services that represent a set of replicas of each process, and, in this way, become highly available. We also do not speak anymore of individual Docker hosts with well-known names and IP addresses to which we deploy containers; we'll now be referring to clusters of hosts to which we deploy services. We don't care about an individual host or node anymore. We don't give it a meaningful name; each node rather becomes a number to us. We also don't care about individual containers and where they are deployed any longer—we just care about having a desired state defined through a service. We can try to depict that as shown in...
![country flag](/images/countries/us.png)
![country flag](/images/countries/gb.png)
![country flag](/images/countries/india.png)
![country flag](/images/countries/germany.png)
![country flag](/images/countries/france.png)
![country flag](/images/countries/canada.png)
![country flag](/images/countries/russia.png)
![country flag](/images/countries/spain.png)
![country flag](/images/countries/brazil.png)
![country flag](/images/countries/australia.png)
![country flag](/images/countries/singapore.png)
![country flag](/images/countries/hungary.png)
![country flag](/images/countries/ukraine.png)
![country flag](/images/countries/lux.png)
![country flag](/images/countries/estonia.png)
![country flag](/images/countries/lithuania.png)
![country flag](/images/countries/southkorea.png)
![country flag](/images/countries/turkey.png)
![country flag](/images/countries/switzerland.png)
![country flag](/images/countries/colombia.png)
![country flag](/images/countries/taiwan.png)
![country flag](/images/countries/chile.png)
![country flag](/images/countries/norway.png)
![country flag](/images/countries/ecuador.png)
![country flag](/images/countries/indonesia.png)
![country flag](/images/countries/newzealand.png)
![country flag](/images/countries/cyprus.png)
![country flag](/images/countries/denmark.png)
![country flag](/images/countries/finland.png)
![country flag](/images/countries/poland.png)
![country flag](/images/countries/malta.png)
![country flag](/images/countries/czech.png)
![country flag](/images/countries/austria.png)
![country flag](/images/countries/sweden.png)
![country flag](/images/countries/italy.png)
![country flag](/images/countries/egypt.png)
![country flag](/images/countries/belgium.png)
![country flag](/images/countries/portugal.png)
![country flag](/images/countries/slovenia.png)
![country flag](/images/countries/ireland.png)
![country flag](/images/countries/romania.png)
![country flag](/images/countries/greece.png)
![country flag](/images/countries/argentina.png)
![country flag](/images/countries/netherlands.png)
![country flag](https://cdn.packtpub.com/flag/004da5c4-583f-4e69-a0a8-0e999f350f90_128px-Flag_of_Bulgaria.png)
![country flag](/images/countries/latvia.png)
![country flag](/images/countries/southafrica.png)
![country flag](/images/countries/malaysia.png)
![country flag](/images/countries/japan.png)
![country flag](/images/countries/slovakia.png)
![country flag](/images/countries/philippines.png)
![country flag](/images/countries/mexico.png)
![country flag](/images/countries/thailand.png)