Lean Startup is a disciplined, scientific and capital efficient method for discovering and building products and services that people love.
It rocks far more than Agile.
Here's a table to illustrate some differences (sorry for not defining each term, I'll leave that as an exercise for you):
|Product Roadmap||Business Model Canvas|
|Product Vision||Product Market Fit|
|Release Plan||Minimal Viable Product|
|Sprint Review||Pivot or Persevere Decision|
|On-Site Customer||"Get Out Of The Building"|
|Backlog||"To Learn" List|
|Definition of Done||Validated Learning|
|Customer Feedback||Customer Validation|
|Acceptance Test||Split Test|
|Mock Object||Feature Fake|
|Continuous Integration||Continuous Deployment|
|Certified Scrum Master||Customer Success Manager|
Lean Startup makes the best parts of Agile more lean and combines them with the brilliant Customer Development process.
I suggest that you start learning about Lean Startup right away and go buy Eric's book