[skywalking] branch master updated: Refine backend-overview.md (#6609)

[wu...@apache.org]

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The following commit(s) were added to refs/heads/master by this push:
     new 32736dc  Refine backend-overview.md (#6609)
32736dc is described below

commit 32736dc0e43df85cbe6d00c6b972631ce358fd26
Author: Wing <69...@users.noreply.github.com>
AuthorDate: Wed Mar 24 13:41:50 2021 +0800

    Refine backend-overview.md (#6609)
---
 docs/en/concepts-and-designs/backend-overview.md | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/docs/en/concepts-and-designs/backend-overview.md b/docs/en/concepts-and-designs/backend-overview.md
index a60b3aa..1889b70 100644
--- a/docs/en/concepts-and-designs/backend-overview.md
+++ b/docs/en/concepts-and-designs/backend-overview.md
@@ -1,17 +1,16 @@
 # Observability Analysis Platform
-We define SkyWalking as an Observability Analysis Platform, which provides a full observability to the services running
-either in brown zone, or green zone, even hybrid.
+SkyWalking is an Observability Analysis Platform that provides full observability to services running in both brown and green zones, as well as services using a hybrid model.
 
 ## Capabilities
-SkyWalking covers all 3 fields of observability, including, **Tracing**, **Metrics** and **logging**.
+SkyWalking covers all 3 areas of observability, including, **Tracing**, **Metrics** and **Logging**.
 
-- **Tracing**. Including, SkyWalking native data formats. Zipkin v1,v2 data formats and Jaeger data formats.
-- **Metrics**. SkyWalking integrates with Service Mesh platforms, such as Istio, Envoy, Linkerd, to provide observability from data panel 
-or control panel. Also, SkyWalking native agents can run in metrics mode, which highly improve the performance.
-- **Logging**. Including the logs collected from disk or through network. Native agent could bind the tracing context with logs automatically,
+- **Tracing**. SkyWalking native data formats, including Zipkin v1 and v2, as well as Jaeger.
+- **Metrics**. SkyWalking integrates with Service Mesh platforms, such as Istio, Envoy, and Linkerd, to build observability into the data panel 
+or control panel. Also, SkyWalking native agents can run in the metrics mode, which greatly improves performances.
+- **Logging**. Includes logs collected from disk or through network. Native agents could bind the tracing context with logs automatically,
 or use SkyWalking to bind the trace and log through the text content.
 
-There are 3 powerful and native language engines to focus on analyzing observability data from above fields.
-1. [Observability Analysis Language](oal.md) processes the native traces and service mesh data.
-1. [Meter Analysis Language](mal.md) does metrics calculation for native meter data, and adopts stable and widely used metrics system, such as Prometheus and OpenTelemetry.
-1. [Log Analysis Language](lal.md) focuses on log contents and collaborate with Meter Analysis Language.
\ No newline at end of file
+There are 3 powerful and native language engines designed to analyze observability data from the above areas.
+1. [Observability Analysis Language](oal.md) processes native traces and service mesh data.
+1. [Meter Analysis Language](mal.md) is responsible for metrics calculation for native meter data, and adopts a stable and widely used metrics system, such as Prometheus and OpenTelemetry.
+1. [Log Analysis Language](lal.md) focuses on log contents and collaborate with Meter Analysis Language.