without losing single push, or receiving redundant pushes. • It costed us about $0.04 USD • Based on AWS calculator, if we send a million push with S3 and Lambda architecture it will cost us approx., • S3 = $6.44 USD • Lambda = $4.37 USD • So, with about $10.81 USD / Month you can send a million pushes. Add other $9.91 to support processing failed pushes etc.