change doc links to ydb.tech doc site, added apache-2 licesnse text for github.com LICENSES-201

change doc links to ydb.tech doc site, added apache-2 licesnse text for github.com LICENSES-201

ref:1630d56861e0766daca96e25fb592269e98d8f56

2 files changed, 199 insertions, 10 deletions

diff --git a/LICENSE b/LICENSE
index ee9684e17a..cabac2dec9 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,193 @@
 Copyright 2022 YANDEX LLC
+                               Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+Copyright 2022 YANDEX LLC
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/README.md b/README.md
index 5407f4847c..c43e9fd090 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ Basic YDB features:
 
 YDB could be deployed in three availability zones. Cluster remains available for both reads and writes during complete outage of a single zone.
 
-Availability zones and regions are covered in more detail [in documentation](docs/en/core/concepts/databases.md#regions-az).
+Availability zones and regions are covered in more detail [in documentation](https://ydb.tech/en/docs/concepts/databases#regions-az).
 
 ### Horizontal scalability
 
@@ -60,21 +60,21 @@ For development purposes we test that YDB could be built and run under latest ve
 
 ## Getting started in 5 minutes
 
-1. Install YDB using [pre-built executables](ydb/docs/ru/core/getting_started/ydb_local.md), [build it from source](BUILD.md) or [use Docker container](ydb/docs/en/core/getting_started/ydb_docker.md).
-1. Install [command line interace](docs/en/core/reference/ydb-cli/index.m) tool to work with scheme and run queries.
-1. Start [local cluster](ydb/docs/ru/core/getting_started/ydb_local.md) or container and run [YQL query](ydb/docs/en/core/yql/reference/index.md) via [YDB CLI](docs/en/core/reference/ydb-cli/index.md).
-1. Access [Embedded UI](ydb/docs/en/core/maintenance/embedded_monitoring/ydb_monitoring.md) via browser for schema navigation, query execution and other database development related tasks.
-1. Run available [example application](ydb/docs/en/core/reference/ydb-sdk/example/example-go.md).
-1. Develop an application using [YDB SDK](ydb/docs/en/core/reference/ydb-sdk)
+1. Install YDB using [pre-built executables](https://ydb.tech/en/docs/getting_started/self_hosted/ydb_local), [build it from source](BUILD.md) or [use Docker container](https://ydb.tech/en/docs/getting_started/self_hosted/ydb_docker).
+1. Install [command line interace](https://ydb.tech/en/docs/getting_started/cli) tool to work with scheme and run queries.
+1. Start [local cluster](https://ydb.tech/en/docs/getting_started/self_hosted/ydb_local) or container and run [YQL query](https://ydb.tech/en/docs/yql/reference/) via [YDB CLI](https://ydb.tech/en/docs/getting_started/cli).
+1. Access [Embedded UI](https://ydb.tech/en/docs/maintenance/embedded_monitoring/) via browser for schema navigation, query execution and other database development related tasks.
+1. Run available [example application](https://ydb.tech/en/docs/reference/ydb-sdk/example/go/).
+1. Develop an application using [YDB SDK](https://ydb.tech/en/docs/reference/ydb-sdk/)
 
 
 ## How to build
-* Build ydb and ydbd binary [from source](BUILD.md).
+* Build ydb and ydbd binaries [from source](BUILD.md).
 
 ## How to deploy
 
-* Deploy a cluster [using Kubernetes](ydb/docs/en/core/deploy/orchestrated/concepts.md).
-* Deploy a cluster using [pre-built executables](ydb/docs/ru/core/getting_started/ydb_local.md).
+* Deploy a cluster [using Kubernetes](https://ydb.tech/en/docs/deploy/orchestrated/concepts).
+* Deploy a cluster using [pre-built executables](https://ydb.tech/en/docs/getting_started/self_hosted/ydb_local).
 
 ## How to contribute