Hi! great question!
I'd say that compared to redis you can get started faster with pandora. I'm not an expert in redis but IIRC you'd need to do the setup/configuration which is what I'm trying to avoid with pandora by getting ready-to-use services pretty fast.
Also, compared to a JSON store service, pandora is kind of similar at the moment. However, in pandora you can have more control over your service by configuring permissions about which operations are public or private or even disabled. Also, you can use a custom domain and pandora will generate the SSL certificate on the background so you can have your own service under your own domain and with custom permissions.
Let me know if this answer your questions and if you have further questions/feedback :)
