List of acquisitions made by Apple in the last decade

 The chart shows Apple's top 10 acqusitions  in each year ( 2002 to  2014)

 Beats Electronics  had been  Apple's most expensive buyout  by Apple standards  at around 3billion USD  in the year 2014

 In 2012  Apple acquired Anobit Technologies  at $450 million USD 

followed by AuthenTec   at $356 million and  Primesense  at   $345 million

timeline of google's 171 acquisitions and 38 investments across companies

 As of today Google has acquired 171 companies according to Crunchbase and has invested as angel investor across  38 companies. The list of companies Google acquired in 2013-2014 has been illustrated below along with their product lines it represented

2014

 SlickLogin (Sound identification)

 DeepMind (Aritifical Intelligence)

Nest (Smart smoke alarms)

2013

Boston Dynamics (Robotics)

Schaft.inc (humanoid robots)

Autofuss (Ads and Design)

FlexyCore (DroidBooster App for Android)

 Flutter (Gesture recognition technology)

Bot & Dolly (Robotic cameras)

Bump (Mobile software)

Holomni (Robotic wheels)

WIMM Labs (Android powered smartwatches)

Meka Robotics (Robots)

Redwood Robotics (Robotic Arms)

Waze (GPS navigation software)

Industrial Perception (Computer Vision)

Makani Power (Airborne wind turbines)

Wavii (Natural Language Processing)

 Behavio (Social Prediction)

Talaria Technologies (Cloud computing)

DNNresearch Inc. (Deep Neural Networks)

Channel Intelligence (Product ecommerce) 

top 10 most expensive companies google acquired

Which Companies acquired by google were most expensive ?  This chart takes a look at the top 10 most costly acquisitions by Google

Google's top 10 Most Expensive  Buyouts 

The above chart from statistic shows the selected  top 10 most expensive companies which google has acquired. Leading the list  Motorola mobility which is acquired for $125 billion USD . Post Motorola Google acquired  smart thermostat creator Nest Labs  in January 2014 at 3.2 billion U.S. dollars. Number 3 was double click purchased at 3.1million USD in 2008. Youtube is number 4 with 1.6billion USD.

Top 10 biggest amazon's acquisitions in its history

These are the The top 10 Amazon's Acquisition. 

In 2014 Amazon bough Twitch ( video gaming streaming website )or an estimated  $970million dollars . However for Amazon " Zappos the online shoe store was its biggest cue   as ' it stole the thunder from other competitors "zappos is known for its almost fanatical customer care  quality and attention to the smallest detail when it came to servicing its customers . Zappos has been amazon's most expensive buyout in the history of the company.

Some other Amazon buyout includes
 Kiva Systems, $775 million, warehouse robot systems in 2012.
Exchange.com, $645 million, online book marketplace in 1999
Quidsi, $545 million, online retailer in  2010.