Until now, we have learned how to write Flask applications in different ways. The deployment of an application and managing the application post-deployment is as important as developing it. There can be various ways of deploying an application, where choosing the best way depends on the requirements. Deploying an application correctly is very important from a security and performance point of view. There are multiple ways of monitoring an application after deployment, of which some are paid and others are free to use. Using them depends on the requirements and features that are offered by them.
In this chapter, we will talk about various application-deployment techniques, followed by some monitoring tools that are used post-deployment.
Each of the tools and techniques we will cover have their own sets of features. For example, adding too much monitoring...