Packages 
Package Description
io.opentelemetry.api
The OpenTelemetry API.
io.opentelemetry.api.baggage
API for associating entries with scoped operations.
io.opentelemetry.api.baggage.propagation
Default OpenTelemetry remote baggage propagators.
io.opentelemetry.api.common
This package contains code common across the OpenTelemetry APIs, including Attributes and classes/utilities for interacting with them.
io.opentelemetry.api.internal
Interfaces and implementations that are internal to OpenTelemetry.
io.opentelemetry.api.trace
API for distributed tracing.
io.opentelemetry.api.trace.propagation
Default OpenTelemetry remote trace propagators.