B737 pilot reported a cockpit window malfunction at cruise. The crew diverted to an alternate airport and landed safely.

Narrative

We took off from our departure Airport with no issues. We deviated a little to get around some weather on the way to our destination while on climbout. We cleared all weather while on climb out. As we climbed to the flight levels; we were in the clear weather wise. We made it to our cruise altitude of FL350. It was a smooth ride. About an hour and 15 minutes into our flight. I heard a pop followed by a crack appear on my side of the windshield. Then the Captain realized what was happening. He [notified and] queried ATC for Lower. We initially only got FL290. I asked Captain to [request priority handling] to get lower. A lot of MOA's were active in our immediate area we found out. The crack started to spread and bubble. We decided to don oxygen mask if our windscreen compromised Further. We got communications established with each other and ATC. Took a vector to descent to 11;000 feet. Captain ran all the QRH's; I remained Pilot Flying. I went to Electronic Flight Bag and started to set us up for ILS XX. On our descent Captain informed ATC of our intention to divert. I flew the airplane and did the Descent Checklist. Captain mentioned it would be an overweight landing. So; we went flaps 40 for the landing. We briefed the RNAV instead of ILS as ATC advised us of GS Inop. Did the approach to a landing with no issues. We were 3000lbs overweight for landing. Made it to the gate. No injuries.Cause: Wear and tearSuggestions: Hard to predict part failure. Not sure if there is a recommended overhaul Timeframe for windshields. If there is; follow it.