diff --git a/README.md b/README.md
index d21812c..95da07d 100644
--- a/README.md
+++ b/README.md
@@ -14,3 +14,24 @@
 ```bash
 pip install py-ms
 ```
+
+## Structure
+
+### pyms/config
+Module to read yaml or json configuration from a dictionary or a path.
+
+### pyms/flask/app
+With the funcion `create_app` initialize the Flask app, register [blueprints](http://flask.pocoo.org/docs/0.12/blueprints/)
+and intialize all libraries like Swagger, database, trace system, custom logger format, etc.
+
+### pyms/flask/healthcheck
+This views is usually used by Kubernetes, Eureka and other systems to check if our application is up and running.
+
+### pyms/logger
+Print logger in JSON format to send to server like Elasticsearch. Inject span traces in logger.
+
+### pyms/rest_template
+Encapsulate common rest operations between business services propagating trace headers if configured.
+
+### pyms/tracer
+Create an injector `flask_opentracing.FlaskTracer` to use in our projects
diff --git a/pyms/config/confile.py b/pyms/config/confile.py
index 5fbf9f4..0935584 100644
--- a/pyms/config/confile.py
+++ b/pyms/config/confile.py
@@ -1,4 +1,4 @@
-"""Module to read yaml conf"""
+"""Module to read yaml or json conf"""
 import logging
 import os