the non-hosted software for interactive security , automation and related solutions is typically deployed and operated by the service provider in its own network operations center . software license revenue represented 9 % , 10 % and 9 % of our revenue in 2019 , 2018 and 2017 , respectively . we also generate revenue from the sale of hardware , including video cameras , video recorders , cellular radio modules , thermostats , image sensors and other peripherals , that enables our solutions . we have a rich history of innovation in cellular technology that enables our robust saas offering . our hardware and other revenue also includes our revenue from the sale of perpetual licenses that provide our customers in the commercial market the right to use our video surveillance software for an indefinite period of time in exchange for a one-time license fee . hardware and other revenue represented 33 % , 31 % and 30 % of 52 our revenue in 2019 , 2018 and 2017 , respectively . we typically expect hardware and other revenue to fluctuate as a percentage of total revenue . highlights of our financial performance for the periods covered in this annual report include : saas and license revenue increase d 16 % to $ 337.4 million in 2019 from $ 291.1 million in 2018 . saas and license revenue increase d 23 % to $ 291.1 million in 2018 from $ 236.3 million in 2017 . total revenue increase d 19 % to $ 502.4 million in 2019 from $ 420.5 million in 2018 . total revenue increase d 24 % to $ 420.5 million in 2018 from $ 338.9 million in 2017 . net income attributable to common stockholders was $ 53.5 million in 2019 , $ 21.5 million in 2018 and $ 29.2 million in 2017 . adjusted ebitda , a non-gaap measurement of operating performance , increase d to $ 108.3 million in 2019 from $ 93.1 million in 2018 . adjusted ebitda increase d to $ 93.1 million in 2018 from $ 71.6 million in 2017 . please see non-gaap measures below in this section of this annual report for a discussion of the limitations of adjusted ebitda ( a non-gaap measure ) and a reconciliation of adjusted ebitda to net income , the most comparable gaap measure , for the years ended december 31 , 2019 , 2018 and 2017 . geographic areas we believe there is significant opportunity to expand our international business , as 3 % of our total revenue during the year ended december 31 , 2019 originated from customers located outside of north america . our products are currently localized and available in approximately 40 countries outside of north america . recent developments on october 21 , 2019 , alarm.com incorporated , one of our wholly-owned subsidiaries , acquired 85 % of the issued and outstanding capital stock of pc open incorporated , a washington corporation , doing business as openeye . openeye provides cloud-managed video surveillance solutions for the enterprise commercial market . we believe the acquisition of openeye will provide a key element to our comprehensive suite of interactive cloud-based services spanning video , access control , intrusion and automation for domestic and international commercial enterprises . in consideration for the purchase of 85 % of the issued and outstanding capital stock of openeye , we paid $ 61.2 million in cash on october 21 , 2019 , after deducting $ 2.8 million related to an agreed holdback . pursuant to the terms of the stock purchase agreement , following the preliminary determination of the working capital of openeye as of the closing date , the purchase price increased by $ 0.2 million . an earn-out of up to an additional $ 11.0 million is payable if certain calendar 2020 revenue targets are met . the purchase price allocation , which is pending until the final determination of the working capital and tax adjustments , was not finalized as of the filing date of this annual report on form 10-k. other business metrics we regularly monitor a number of financial and operating metrics in order to measure our current performance and estimate our future performance . our other business metrics may be calculated in a manner different from the way similar business metrics used by other companies are calculated and include the following ( dollars in thousands ) : replace_table_token_8_th 53 saas and license revenue we believe that saas and license revenue is an indicator of the productivity of our existing service provider partner s and their ability to activate and maintain subscribers using our intelligently connected property solutions , our ability to add new service provider partners reselling our solutions , the demand for our intelligently connected property solutions and the pace at which the market for these solutions is growing . adjusted ebitda adjusted ebitda represents our net income before interest expense , interest income , other income , net , provision for / ( benefit from ) income taxes , amortization and depreciation expense , stock-based compensation expense , acquisition-related expense and legal costs and settlement fees incurred in connection with non-ordinary course litigation and other disputes , particularly costs involved in ongoing intellectual property litigation . we do not consider these items to be indicative of our core operating performance . the non-cash items include amortization and depreciation expense and stock-based compensation expense . we do not adjust for ordinary course legal expenses resulting from maintaining and enforcing our intellectual property portfolio and license agreements . adjusted ebitda is a key measure that our management uses to understand and evaluate our core operating performance and trends to generate future operating plans , to make strategic decisions regarding the allocation of capital , and to make investments in initiatives that are focused on cultivating new markets for our solutions . story_separator_special_tag we are subject to u.s. federal , state and local income taxes as well as foreign income taxes . during the ordinary course of business , there are many transactions and calculations for which the ultimate tax determination is uncertain . as a result , we recognize tax liabilities based on estimates of whether additional taxes will be due . our effective tax rates were different from the statutory rate primarily due to the tax windfall benefits from employee stock-based payment transactions , foreign derived intangible income deductions and research and development tax credits claimed , and state taxes , partially offset by the impact of non-deductible meal and entertainment expenses and state taxes . we recognize excess tax windfall benefits on a discrete basis in the quarter in which it occurs , and we anticipate that our effective tax rate will vary from quarter to quarter depending on our stock price and exercises of stock options under our equity incentive plans each period . 57 results of operations the following table sets forth our selected consolidated statements of operations and data as a percentage of revenue for the periods presented ( in thousands ) . certain previously reported amounts in the consolidated statements of operations for the years ended december 31 , 2018 and 2017 have been reclassified to conform to our current presentation to reflect interest income as a separate line item , which was previously included in other income , net . consolidated statements of operations replace_table_token_10_th _ ( 1 ) excludes amortization and depreciation shown in operating expenses below . ( 2 ) operating expenses include stock-based compensation expense as follows ( in thousands ) : replace_table_token_11_th 58 the following table sets forth the components of cost of revenue as a percentage of revenue : replace_table_token_12_th comparison of years ended december 31 , 2019 to december 31 , 2018 the following tables in this section set forth our selected consolidated statements of operations ( in thousands ) , data for the percentage change and data as a percentage of revenue for the years ended december 31 , 2019 and 2018 . certain previously reported amounts in the consolidated statements of operations for the year ended december 31 , 2018 have been reclassified to conform to our current presentation to reflect interest income as a separate line item , which was previously included in other income , net . revenue replace_table_token_13_th the $ 81.9 million increase in total revenue in 2019 as compared to 2018 was the result of a $ 46.3 million , or 16 % , increase in our saas and license revenue and a $ 35.6 million , or 27 % , increase in our hardware and other revenue . our software license revenue included within saas and license revenue increase d $ 2.1 million to $ 43.4 million in 2019 as compared to $ 41.3 million during 2018 . the increase in our alarm.com segment saas and license revenue in 2019 was primarily due to growth in our subscriber base , including the revenue impact from subscribers we added in 2018. to a lesser extent , saas and license revenue increased in the period due to an increase in license fees . the increase in hardware and other revenue in 2019 compared to 2018 was due to an increase in the volume of video cameras sold . our other segment contributed 15 % of the increase in saas and license revenue in 2019 as compared to 2018 . the increase in saas and license revenue for our other segment in 2019 as compared to 2018 was due to an increase in sales of our energy management and demand response solutions and our property management and hvac solutions . hardware and other revenue in our other segment decreased 13 % in 2019 as compared to 2018 , primarily due to the timing of sales related to our remote access management solution . cost of revenue replace_table_token_14_th ( 1 ) excludes amortization and depreciation shown in operating expenses . the $ 37.9 million increase in cost of revenue in 2019 as compared to 2018 was the result of a $ 32.8 million , or 32 % , increase in cost of hardware and other revenue and a $ 5.1 million , or 11 % , increase in cost of saas and license revenue . our cost of software license revenue included within cost of saas and license revenue decrease d $ 0.4 million to $ 1.3 million during 2019 as compared to $ 1.7 million during 2018 . the increase in cost of alarm.com segment hardware and other revenue related primarily to an increase in the number of hardware units shipped in 2019 as compared to 2018 . the increase in cost of 59 alarm.com segment saas and license revenue related primarily to the growth in our subscriber base , which drove a corresponding increase in amounts paid to wireless network providers . cost of hardware and other revenue as a percentage of hardware and other revenue was 81 % and 78 % for the years ended december 31 , 2019 and 2018 , respectively . cost of saas and license revenue as a percentage of saas and license revenue was 15 % for each of the years ended december 31 , 2019 and 2018 . cost of software license revenue as a percentage of software license revenue was 3 % and 4 % for the years ended december 31 , 2019 and 2018 , respectively . the increase in cost of hardware and other revenue as a percentage of hardware and other revenue in 2019 as compared to 2018 is a reflection of the mix of product sales during the periods . sales and marketing expense replace_table_token_15_th the $ 5.9 million increase in sales and marketing expense in 2019 as compared to 2018 was primarily due to increases in headcount for our sales team and service provider partner support team to support our growth

debt obligations on october 6 , 2017 , we entered into a $ 125.0 million senior secured revolving credit facility , or the 2017 facility , with svb , as administrative agent , pnc bank , national association , as documentation agent , and a syndicate of lenders . upon entry into the 2017 facility , we borrowed $ 72.0 million , which was used to repay the previously outstanding balance under our previous credit facility . the 2017 facility matures in october 2022 and includes an option to further increase the borrowing capacity to $ 175.0 million with the consent of the lenders . costs incurred in connection with the 2017 facility were capitalized and are being amortized as interest expense over the term of the 2017 facility . the 2017 facility is secured by substantially all of our assets , including our intellectual property . during each of the years ended december 31 , 2019 and 2018 , we repaid $ 4.0 million of the outstanding balance of the 2017 facility . the outstanding principal balance on the 2017 facility accrues interest at a rate equal to , at our option , either ( 1 ) libor , plus an applicable margin based on our consolidated leverage ratio , or ( 2 ) the highest of ( a ) the wall street journal prime rate , ( b ) the federal funds rate plus 0.50 % , or ( c ) libor plus 1.00 % plus an applicable margin based on ourconsolidated leverage ratio .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```debt obligations on october 6 , 2017 , we entered into a $ 125.0 million senior secured revolving credit facility , or the 2017 facility , with svb , as administrative agent , pnc bank , national association , as documentation agent , and a syndicate of lenders . upon entry into the 2017 facility , we borrowed $ 72.0 million , which was used to repay the previously outstanding balance under our previous credit facility . the 2017 facility matures in october 2022 and includes an option to further increase the borrowing capacity to $ 175.0 million with the consent of the lenders . costs incurred in connection with the 2017 facility were capitalized and are being amortized as interest expense over the term of the 2017 facility . the 2017 facility is secured by substantially all of our assets , including our intellectual property . during each of the years ended december 31 , 2019 and 2018 , we repaid $ 4.0 million of the outstanding balance of the 2017 facility . the outstanding principal balance on the 2017 facility accrues interest at a rate equal to , at our option , either ( 1 ) libor , plus an applicable margin based on our consolidated leverage ratio , or ( 2 ) the highest of ( a ) the wall street journal prime rate , ( b ) the federal funds rate plus 0.50 % , or ( c ) libor plus 1.00 % plus an applicable margin based on ourconsolidated leverage ratio .
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 Suspicious Activity Report : the non-hosted software for interactive security , automation and related solutions is typically deployed and operated by the service provider in its own network operations center . software license revenue represented 9 % , 10 % and 9 % of our revenue in 2019 , 2018 and 2017 , respectively . we also generate revenue from the sale of hardware , including video cameras , video recorders , cellular radio modules , thermostats , image sensors and other peripherals , that enables our solutions . we have a rich history of innovation in cellular technology that enables our robust saas offering . our hardware and other revenue also includes our revenue from the sale of perpetual licenses that provide our customers in the commercial market the right to use our video surveillance software for an indefinite period of time in exchange for a one-time license fee . hardware and other revenue represented 33 % , 31 % and 30 % of 52 our revenue in 2019 , 2018 and 2017 , respectively . we typically expect hardware and other revenue to fluctuate as a percentage of total revenue . highlights of our financial performance for the periods covered in this annual report include : saas and license revenue increase d 16 % to $ 337.4 million in 2019 from $ 291.1 million in 2018 . saas and license revenue increase d 23 % to $ 291.1 million in 2018 from $ 236.3 million in 2017 . total revenue increase d 19 % to $ 502.4 million in 2019 from $ 420.5 million in 2018 . total revenue increase d 24 % to $ 420.5 million in 2018 from $ 338.9 million in 2017 . net income attributable to common stockholders was $ 53.5 million in 2019 , $ 21.5 million in 2018 and $ 29.2 million in 2017 . adjusted ebitda , a non-gaap measurement of operating performance , increase d to $ 108.3 million in 2019 from $ 93.1 million in 2018 . adjusted ebitda increase d to $ 93.1 million in 2018 from $ 71.6 million in 2017 . please see non-gaap measures below in this section of this annual report for a discussion of the limitations of adjusted ebitda ( a non-gaap measure ) and a reconciliation of adjusted ebitda to net income , the most comparable gaap measure , for the years ended december 31 , 2019 , 2018 and 2017 . geographic areas we believe there is significant opportunity to expand our international business , as 3 % of our total revenue during the year ended december 31 , 2019 originated from customers located outside of north america . our products are currently localized and available in approximately 40 countries outside of north america . recent developments on october 21 , 2019 , alarm.com incorporated , one of our wholly-owned subsidiaries , acquired 85 % of the issued and outstanding capital stock of pc open incorporated , a washington corporation , doing business as openeye . openeye provides cloud-managed video surveillance solutions for the enterprise commercial market . we believe the acquisition of openeye will provide a key element to our comprehensive suite of interactive cloud-based services spanning video , access control , intrusion and automation for domestic and international commercial enterprises . in consideration for the purchase of 85 % of the issued and outstanding capital stock of openeye , we paid $ 61.2 million in cash on october 21 , 2019 , after deducting $ 2.8 million related to an agreed holdback . pursuant to the terms of the stock purchase agreement , following the preliminary determination of the working capital of openeye as of the closing date , the purchase price increased by $ 0.2 million . an earn-out of up to an additional $ 11.0 million is payable if certain calendar 2020 revenue targets are met . the purchase price allocation , which is pending until the final determination of the working capital and tax adjustments , was not finalized as of the filing date of this annual report on form 10-k. other business metrics we regularly monitor a number of financial and operating metrics in order to measure our current performance and estimate our future performance . our other business metrics may be calculated in a manner different from the way similar business metrics used by other companies are calculated and include the following ( dollars in thousands ) : replace_table_token_8_th 53 saas and license revenue we believe that saas and license revenue is an indicator of the productivity of our existing service provider partner s and their ability to activate and maintain subscribers using our intelligently connected property solutions , our ability to add new service provider partners reselling our solutions , the demand for our intelligently connected property solutions and the pace at which the market for these solutions is growing . adjusted ebitda adjusted ebitda represents our net income before interest expense , interest income , other income , net , provision for / ( benefit from ) income taxes , amortization and depreciation expense , stock-based compensation expense , acquisition-related expense and legal costs and settlement fees incurred in connection with non-ordinary course litigation and other disputes , particularly costs involved in ongoing intellectual property litigation . we do not consider these items to be indicative of our core operating performance . the non-cash items include amortization and depreciation expense and stock-based compensation expense . we do not adjust for ordinary course legal expenses resulting from maintaining and enforcing our intellectual property portfolio and license agreements . adjusted ebitda is a key measure that our management uses to understand and evaluate our core operating performance and trends to generate future operating plans , to make strategic decisions regarding the allocation of capital , and to make investments in initiatives that are focused on cultivating new markets for our solutions . story_separator_special_tag we are subject to u.s. federal , state and local income taxes as well as foreign income taxes . during the ordinary course of business , there are many transactions and calculations for which the ultimate tax determination is uncertain . as a result , we recognize tax liabilities based on estimates of whether additional taxes will be due . our effective tax rates were different from the statutory rate primarily due to the tax windfall benefits from employee stock-based payment transactions , foreign derived intangible income deductions and research and development tax credits claimed , and state taxes , partially offset by the impact of non-deductible meal and entertainment expenses and state taxes . we recognize excess tax windfall benefits on a discrete basis in the quarter in which it occurs , and we anticipate that our effective tax rate will vary from quarter to quarter depending on our stock price and exercises of stock options under our equity incentive plans each period . 57 results of operations the following table sets forth our selected consolidated statements of operations and data as a percentage of revenue for the periods presented ( in thousands ) . certain previously reported amounts in the consolidated statements of operations for the years ended december 31 , 2018 and 2017 have been reclassified to conform to our current presentation to reflect interest income as a separate line item , which was previously included in other income , net . consolidated statements of operations replace_table_token_10_th _ ( 1 ) excludes amortization and depreciation shown in operating expenses below . ( 2 ) operating expenses include stock-based compensation expense as follows ( in thousands ) : replace_table_token_11_th 58 the following table sets forth the components of cost of revenue as a percentage of revenue : replace_table_token_12_th comparison of years ended december 31 , 2019 to december 31 , 2018 the following tables in this section set forth our selected consolidated statements of operations ( in thousands ) , data for the percentage change and data as a percentage of revenue for the years ended december 31 , 2019 and 2018 . certain previously reported amounts in the consolidated statements of operations for the year ended december 31 , 2018 have been reclassified to conform to our current presentation to reflect interest income as a separate line item , which was previously included in other income , net . revenue replace_table_token_13_th the $ 81.9 million increase in total revenue in 2019 as compared to 2018 was the result of a $ 46.3 million , or 16 % , increase in our saas and license revenue and a $ 35.6 million , or 27 % , increase in our hardware and other revenue . our software license revenue included within saas and license revenue increase d $ 2.1 million to $ 43.4 million in 2019 as compared to $ 41.3 million during 2018 . the increase in our alarm.com segment saas and license revenue in 2019 was primarily due to growth in our subscriber base , including the revenue impact from subscribers we added in 2018. to a lesser extent , saas and license revenue increased in the period due to an increase in license fees . the increase in hardware and other revenue in 2019 compared to 2018 was due to an increase in the volume of video cameras sold . our other segment contributed 15 % of the increase in saas and license revenue in 2019 as compared to 2018 . the increase in saas and license revenue for our other segment in 2019 as compared to 2018 was due to an increase in sales of our energy management and demand response solutions and our property management and hvac solutions . hardware and other revenue in our other segment decreased 13 % in 2019 as compared to 2018 , primarily due to the timing of sales related to our remote access management solution . cost of revenue replace_table_token_14_th ( 1 ) excludes amortization and depreciation shown in operating expenses . the $ 37.9 million increase in cost of revenue in 2019 as compared to 2018 was the result of a $ 32.8 million , or 32 % , increase in cost of hardware and other revenue and a $ 5.1 million , or 11 % , increase in cost of saas and license revenue . our cost of software license revenue included within cost of saas and license revenue decrease d $ 0.4 million to $ 1.3 million during 2019 as compared to $ 1.7 million during 2018 . the increase in cost of alarm.com segment hardware and other revenue related primarily to an increase in the number of hardware units shipped in 2019 as compared to 2018 . the increase in cost of 59 alarm.com segment saas and license revenue related primarily to the growth in our subscriber base , which drove a corresponding increase in amounts paid to wireless network providers . cost of hardware and other revenue as a percentage of hardware and other revenue was 81 % and 78 % for the years ended december 31 , 2019 and 2018 , respectively . cost of saas and license revenue as a percentage of saas and license revenue was 15 % for each of the years ended december 31 , 2019 and 2018 . cost of software license revenue as a percentage of software license revenue was 3 % and 4 % for the years ended december 31 , 2019 and 2018 , respectively . the increase in cost of hardware and other revenue as a percentage of hardware and other revenue in 2019 as compared to 2018 is a reflection of the mix of product sales during the periods . sales and marketing expense replace_table_token_15_th the $ 5.9 million increase in sales and marketing expense in 2019 as compared to 2018 was primarily due to increases in headcount for our sales team and service provider partner support team to support our growth

