Yandex ( a combination of “”Ya”” for the Russian letter “”I”” and “”Ndex”” for Index) is Russia’s most popular search engine which holds onto about 60+% market share in Russia for Search Engines, and also has a stronghold in Poland, Ukraine, Kazakhstan, Belarus, and Turkey. Google is still a major stakeholder in the Russia market, but if you are marketing in Russia, you should optimize for Yandex first, Google second. Yandex has several SEO requirements that differ from other search engines
MatrixNet is Yandex’s page priority algorithm (similar to PageRank). MatrixNet measures site popularity and the sum and relevancy of backlinks to determine a thematic index citation (TIC) score. Yandex’s index is re-calculated a few times a month for static pages, and several times per day for blog posts, whereas Google constantly crawls and indexes content
Yandex has grown over the years and it offers many services which are similar to the ones that Google offers, and all of Yandex services conveniently collected on one page: Here are some of Yandex services: – advertising service for the sale of automobiles.
Tickets – cheap tickets for flights in Russia and abroad.
Billboard -information about concerts, performances etc.
Money-electronic money from Yandex.
Drive – cloud file storage from Yandex.
Images -search for images in Yandex.
And many other services that Yandex offers its local clients.

Additional Terms:

Rich Snippets
Social Media
Search Engine Reputation Management (SERM)/ Online reputation management (ORM)
Google Partner/Premier Google Partner
Responsive Website
Mobile-Friendly website
Google maps
Call To Action
Bounce Rate/Abandonment Rate
Mobile Marketing
Content Marketing 
Marketing Automation / Programmatic
Website Traffic/ Traffic Analysis
Geo Targeting
Quality Score
Lead Generation
A/B Testing
B2C Digital Marketing
B2B Digital Marketing
Doorway page
Dead/ Broken link
Internal Link
Outbound Link
Inbound Link
Heading tags
Google Trends
Google Sitelinks
Google Keyword Planner
CTR (click-through rate)
CPC (Cost Paid per Click)
404 Not Found
Redirect 302
Redirect 301
200 OK Code
Alt attribute/ Alt tags
Nofollow link
Search engine algorithm
White hat search engine optimisation
Black hat search engine optimisation
White hat SEO
Google’s Penguin Update
Organic Search Results
Link Building
Landing Page
Google Dance
Email Lists
Duplicate Content
Canonical URL
Conversion Rate
Satellite Websites
Google’s Knowledge Graph
Link Exchange
Long tail
Google Webmaster Tools
Mini Site
Search Engine
Site Map
Player Embed
Bread Crumbs
Google Panda Update
YouTube Channel
Contextual Advertising
Open Source
Google’s Search Engine Robot
Meta Tags
Affiliate Program
CPA - Cost Per Action
CPL - Cost Per Lead
Friendly URL
GDN – Google Display Network
Page Rank
ROI – Return on Investment
RSS (Really Simple Syndication)
SEM-Search Engine Marketing
XML–Extensible Markup Language