https://crossplane.io/
https://github.com/crossplane/crossplane

https://crossplane.io/docs/v1.4/

https://www.youtube.com/channel/UC19FgzMBMqBro361HbE46Fw

2021
SaiyamPathak - Crossplane Composition Deep Dive of 1:23:33
    https://www.youtube.com/watch?v=78xR7ypzB4Q
SaiyamPathak - Crossplane - Provisioning infrastructure using Kubernetes API(CNCFMinutes 17) of 10:51
    https://www.youtube.com/watch?v=NLHmqVUvtkU