PragmaRAD - technology stacks/methodologies early adoption in pragmatic way

RAD abbreviation can be read as: either R&D (Research&Development) or RAD(Rapid App Development, a term from 2000s). More like the 1st.
PragmaRAD is web/enterprise software consulting company. Currently, it's in prototype phase, no official business entity created. It can be considered as a umbrella for early adoption projects.
This site is about gathering in 1 place links to different resources related to exploring / searching for pragmatic solutions based on modern cutting/bleeding edge tech stacks and approaches. Idea was born after watching overhyped flashy technology raises and fails in delivering value in real world apps. As IT field is huge, let's reduce a scope to mere subset of IT fields: web, clouds, containers, APIs, databases. In other words, typical web/enterprise software areas.

"Standard" research steps:

Main question these case studies ought to answer to:
Is particular combination of tech stacks and/or suggested new design approaches is ready for production / everyday use?
Along with this main question supplement ones can be addressed. For instance, how easy "day2" operations (governance) can be done. An example of "day2" failed is long list of code generators, which allowed to jump start quickly, but crippled updates if developers already changed parts of generated code.

Requirements to case studies:

Areas to embrace in research/early adoption as of Fall 2019: Along with software itself operations such as DevOps can be covered too. Topics can be: Sample projects: