# Manage Measurement

### Overview

Measurement is a resource that implements Paigo's unique feature of **Usage Measurement and Collection** engine. Measurement can be created and managed in Paigo dashboard or by API. This chapter introduces Measurement at a high level. For complete guide on a specific kind of measurement that implements one of the support usage measurement and collection methods, see other pages in this chapter.

By official definition, measurement defines where, what and how to calculate usage data and collect back to Paigo backend. For example, a measurement could instruct Paigo to calculate the number of API calls by **subscribing to a production event bus in us-east-1** (where), polls for **the message in an API call topic named** `apiEmit` (what) **every 30 seconds** (how) with a limited **read-only access role** `billing-reader` (how). All of these things can be defined in a measurement so that Paigo can be on autopilot mode to calculate the usage.

### Manage Measurement

The easiest way to manage measurement is from Paigo dashboard. Navigate to **Measurement** tab to see a list of **Measurement** already created. Click **New Measurement** to create new measurement. Click on existing **Measurement** in the table to view the details on the measurement, then update or delete existing measurements. Measurements can be reused by different **Dimensions.**

Paigo supports the following methods for usage measurement and collection. See below pages on detailed information of setting up **Measurement** for those methods.

* [infrastructure-based-method](https://docs.paigo.tech/usage-metering/infrastructure-based-method "mention")
* [agent-based-method](https://docs.paigo.tech/usage-metering/agent-based-method "mention")
* [api-based-method](https://docs.paigo.tech/usage-metering/api-based-method "mention")
* [datastore-based-method](https://docs.paigo.tech/usage-metering/datastore-based-method "mention")
* SQL-based Measurement (Coming soon).