Is software considered a business asset?

Hi,

I can see that software is considered a business asset - but here is where I get confused.   In 2015 I spent $7500 for engineering software - and it comes with a subscription.   The subscription is about $1600 or $1700 per year and it keeps the software I bought up to date.  

So, my software doesn't depreciate if I continue with the subscription.  However, assets depreciate.    I assume the subscription cost would be filed as an expense. 

What is the typical way for software to be deducted?  An asset or expense?