Flask in AWS Lambda

api.py

from flask import Flask, request, jsonify


app = Flask(__name__)


@app.route('/ping', methods=['GET'])
def ping():
    return "pong"


@app.route('/echo', methods=['POST'])
def echo():
    json = request.get_json()
    return jsonify(json)

serverless.yml

service: flasktest

provider:
  name: aws
  runtime: python3.8

plugins:
  - serverless-wsgi
  - serverless-python-requirements

package:
  include:
    - '!./**'
    - './api.py'
  exclude:
    - '**'

functions:
  api:
    handler: wsgi_handler.handler
    events:
      - http: ANY /{path}

custom:
  wsgi:
    app: api.app