AWS Lambda is one of many Amazon services. Its an example of so called “serverless architecture”. The defining characteristic of this approach is that it abstracts the runtime environment from the code.
They help us organise the data in a structured way. Excel, Google Spreadsheets, LibreOffice Spreadsheets, we all know and use these tools, whether for home budget planning, groceries list, absence tracking or modeling the financial markets.
Gmail is one of free web mail services, provided by Google. And to be precise, this is basic gmail functionality. On the other hand, registering in gmail, by default creates for you an account in google+, which allows you to do much more. But to focus on programmatic case, let’s talk about web mail service only