In the context of an HTTP transaction, basic access authentication is a method for an HTTP user agent (e.g. a web browser) to provide a username and password when making a request. Basic authentication is a simple authentication scheme built into the HTTP protocol. 

The client sends HTTP requests with the Authorization header that contains the word Basic followed by a space and a Base64-encoded string in the format username:password. Voyado will Base64-encode the configured value. 

For example, to authorize as demo:p@55w0rd, the client would send:

Authorization: Basic ZGVtbzpwQDU1dzByZA==

Bearer authentication (also called token authentication) is an HTTP authentication scheme that uses a security token called a bearer token. The name “Bearer authentication” can be understood as “give access to the bearer of this token.” 

The bearer token is a cryptic string, usually generated by the server in response to a login request.

Authorization: Bearer <token>

An application programming interface key (API key) is a unique identifier used to authenticate a user, developer, or calling program to an API (the endpoint).

Authorization: Apikey <token>

This option is used for internal Voyado APIs (for example, custom triggers). It will be added as its own value in the header.

voyadoapi: <Auth credentials>