Choosing between Google Cloud Flexible or Standard Environment : <p>I'm starting to build a web/mobile app that is going to be offered as SaaS.
I have seen many cloud options for hosting (Heroku, AWS) but finally decided to go with Google Cloud App Engine.</p>

<p>My back-end will be Java based, and I'm confused about going with the Standard or Flexible Env.
I have read several docs online but still undecided.</p>

<p><em>Considerations to tackle:</em></p>

<ol>
<li>I am not very experienced with Docker and this is my first Saas App.</li>
<li><p>My app should run perfectly with the offering of the Standard Env.</p></li>
<li><p>Migrating from the Standard to the Flex environment seems to bring
some headache.</p></li>
</ol>

<p>Would you please help me decide on the way to?</p>
