title: Create a middle BackEnd for a Mobile app
body: <p>I am developing a mobile app on Android.
  I download a lot of information from the backend via REST API.
  For example for obtain the information about a contract I use the api the following request:</p>
  
  <pre><code>GET /contracts/01212314.json
  </code></pre>
  
  <p>It return a json with many fields</p>
  
  <pre><code>{
  "conto_contrattuale": "01212314",
  "intestatario": "Dennis D'Amico",
  "utilizzo": "COTTURA + PROD. ACQUA 7 GG",
  "codice_settore_merceologico": "E1",
  "settore_merceologico": "ELETTRICITA",
  "codice_societa_vendita": "Z016",
  "societa_vendita": "Estra Energie S.r.l.",
  "fornitura_indirizzo": "Via Palermo",
  "fornitura_civico": "20",
  "fornitura_precisazione": "Rosso",
  "fornitura_cap": "59100",
  "fornitura_comune": "Prato"
  "rid": false,
  "fatt_elettronica": true,
  "fatt_email": "andrea.bettarini@devise.it",
  "fatture_scadute": 1,
   }
  </code></pre>
  
  <p>But I am only interested to the field : "fornitura_indirizzo"
  I can't modify the backend and the API.
  So I think to create a new middle backend that fetch the info from the actual backend and exposes a call only for the field "fornitura_indirizzo".</p>
  
  <p>How can I do?
  Is it possible on google cloud platform? and is it free?</p>
  
  <p>Thank you for your consideration.</p>