The Warriors fell in the final to Leinster at the RDS but, rather than dwell on the 34-12 defeat, Townsend took the positives.
And the former Scotland fly-half says there's no reason why his side can't go one better next season.
"I think that the final has given us a fantastic platform to build on and grow Glasgow as a club and a sporting institution," he told Glasgow Evening Times.
"I will never forget leaving the team hotel in Dublin on Saturday night and seeing the streets towards the RDS lined with Glasgow fans, it really put the emotions in the blender.
"We had around 3,500 fans behind us in the Irish capital and I think, although we came up short, the atmosphere and the effort the players put in will encourage the fans to travel in bigger numbers to get behind Glasgow next season.
"Clearly there were a lot of lessons to learn from the final and we will make sure that we make the most of them.
"The main thing is that we use this first major final to kick on and get stronger."
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