A SlideMagic user could not find a TAM (total addressable market) slide and used a service I am offering that not many people take advantage of: request them to be added. You can find 4 new slides about TAM here.
About the layouts:
Unlike most of the traditional TAM slide templates, I did not go for concentric circles. Yes, SlideMagic does not do circles (yet), but I find these hand drawn circles always misleading. It is very hard to get the circle size to be accurate. Hence the more simple bars.
TAM is a bit of a buzzword, I hence I tried to avoid using TAM (available, or addressable?), SAM, target market, etc. and use normal English instead.
About TAMs.
Watch out with using TAM slides in your investor pitch. Yes, it is included in many template guidelines, but believe me, investors do not really respond well to the type of analysis where we identify a $15 billion universe, $100m or which we can address, and $200k sales we are going to get in year 5. Also, most of them do not like buzzwords.
A TAM-like concept is useful when you want to introduce a new market (i.e., a bucket that does not exist in any Gartner report yet). Rather than calling it TAM, or trying to relate it to any of these buckets, maybe provide a simple analysis instead of what people in the world could spend on services like this. Show the assumptions you made, bottom up. This does not try to create a new Gartner bucket, but instead educates the investor how to think about your market.
Do sanity check though against commonly know Gartner buckets, it might be an obvious question you are going to get.