So what are my experiences using EECS doing some APEX work? First of all, it is not blazing fast. Probably caused by the latency (as mentioned in my previous post). It is not slow, it is just ok('ish). Second, and way more important, it runs APEX 5.0.4 ! So whatever Oracle advertises about " Cloud first " ... it doesn't seem to apply to APEX (or APEX on EECS). So this fact alone makes this environment useless for demo, development and presentation purposes at this moment. I heard through the grapevine that 5.1 will be available from April 25 - but that's still a month away. And that rumour could be false. Third, because you don't have access to a SYS account, you can't install something like APEX-SERT . Maybe the install scripts can be adapted for the PDB_ADMIN account - I haven't looked into that yet. Four : As mentioned in an earlier post, within an EECS PDB instance you get one and only one APEX Workspace. You can't add one (no