Scaling up vs scaling out your security segmentation
If you follow discussion on running cloud native, monolithic or more traditional applications you may have stumbled over the terms “scale up“ and “scale out“. Don’t feel bad if you don’t know these, because they were formerly just “vertical scaling“ (scale up) and “horizontal scaling“ (scale out).
What is scale up? Scale up means, if you have e.g. a server in your datacenter running your database, to make the database faster or have more concurrent client getting served, you would add more hardware to that server and just make it the biggest machine available.