% Change vs. Prior
% Change vs. Prior
% Change vs. Prior
% Change vs. Prior
% Change vs. Prior
% Change vs. Prior
% Change vs. Prior
% Change vs. Prior
% Change vs. Prior
Year
Year
% of Total Revenue
% of Total Revenue
% of Total Revenue
% of Total Revenue
% of Total Revenue
% of Total Revenue
% of Total Revenue
2019
2019
2018
2017
2019
2018
2019
2018
2017
(in thousands)
Cloud subscriptions
$46,831
$23,104
$9,596
103%
141%
8%
4%
2%
Software license
48,855
45,368
72,313
8%
-37%
8%
8%
12%
Maintenance
149,230
147,033
142,988
1%
3%
24%
26%
24%
Services
360,516
329,685
326,502
9%
1%
58%
59%
55%
Hardware
12,517
13,967
43,190
-10%
-68%
2%
3%
7%
Total revenue
$617,949
$559,157
$594,599
11%
-6%
100%
100%
100%
revenue .
our revenue consists of fees generated from cloud subscriptions software licensing maintenance professional services and hardware sales .
cloud subscriptions revenue year 2019 compared with year 2018 in 2017 we released manhattan active ™ solutions accelerating our business transition to cloud subscriptions .
as a result cloud subscriptions revenue increased $ 23 .
7 million or 103 % to $ 46 .
8 million in 2019 compared to 2018 as customers began to purchase .
our saas offerings rather than a traditional perpetual license .
our customers increasingly prefer cloud-based solutions including existing customers that are migrating from on-premise to cloud-based offerings .
cloud subscriptions revenue for the americas emea and apac segments increased $ 20 .
3 million $ 2 .
7 million and $ 0 .
7 million respectively .
year 2018 compared with year 2017 cloud subscriptions revenue increased $ 13 .
5 million to $ 23 .
1 million in 2018 compared to 2017 as customers began to purchase our saas offerings rather than a traditional perpetual license .
cloud subscriptions revenue for the americas emea and apac segments increased $ 11 .
3 million $ 1 .
8 million and $ 0 .
4 million respectively .
the emea segment began recognizing cloud subscription revenue for the first time in 2017 while the apac segment began in 2018 .
software license revenue year 2019 compared with year 2018 software license revenue increased $ 3 .
5 million to $ 48 .
9 million in 2019 compared to 2018 .
license revenue for the americas and emea segments increased $ 6 .
1 million and $ 0 .
1 million respectively and license revenue for the apac segment decreased $ 2 .
7 million in 2019 over 2018 .
the perpetual license sales percentage mix across our product suite in 2019 was approximately 80 % warehouse management solutions .
year 2018 compared with year 2017 software license revenue decreased $ 26 .
9 million to $ 45 .
4 million in 2018 compared to 2017 .
the decrease was influenced by -1 extended sales cycles and evaluations for some of our contracts and -2 the business transition to cloud subscriptions which resulted in traditional perpetual license deals closing as cloud deals based on customer demand .
license revenue for the americas and emea segments decreased $ 15 .
7 million and $ 11 .
5 million respectively in 2018 over 2017 while license revenue for the apac segment increased $ 0 .
3 million .
the perpetual license sales percentage mix across our product suite in 2018 was approximately 80 % warehouse management solutions .
software license revenue decreased $ 26 .
9 million to $ 45 .
4 million in 2018 compared to 2017 .
the decrease was influenced by -1 extended sales cycles and evaluations for some of our contracts and -2 the business transition to cloud subscriptions which resulted in traditional perpetual license deals closing as cloud deals based on customer demand .
license revenue for the americas and emea segments decreased $ 15 .
7 million and $ 11 .
5 million respectively in 2018 over 2017 while license revenue for the apac segment increased $ 0 .
3 million .
the perpetual license sales percentage mix across our product suite in 2018 was approximately 80 % warehouse management solutions .
maintenance revenue year 2019 compared with year 2018 maintenance revenue increased $ 2 .
2 million in 2019 compared to 2018 primarily due to -1 an increase in the first-year maintenance revenue ; -2 our annual renewal rate of customers subscribing to maintenance which was greater than 90 % ; and -3 increases in the maintenance renewal prices .
maintenance revenue for the americas emea and apac segments increased $ 1 .
4 million $ 0 .
4 million and $ 0 .
4 million respectively compared to 2018 .
year 2018 compared with year 2017 maintenance revenue increased $ 4 .
0 million in 2018 compared to 2017 primarily due to -1 an increase in the first-year maintenance revenue ; -2 our annual renewal rate of customers subscribing to maintenance which was greater than 90 % ; and -3 increases in the maintenance renewal prices .
maintenance revenue for the americas emea and apac segments increased $ 1 .
1 million $ 2 .
2 million and $ 0 .
7 million respectively compared to 2017 .
services revenue year 2019 compared with year 2018 services revenue increased $ 30 .
8 million or 9 % in 2019 compared to 2018 .
the americas emea and apac segments increased $ 17 .
8 million $ 10 .
3 million and $ 2 .
7 million respectively compared to 2018 .
year 2019 compared with year 2018 services revenue increased $ 30 .
8 million or 9 % in 2019 compared to 2018 .
the americas emea and apac segments increased $ 17 .
8 million $ 10 .
3 million and $ 2 .
7 million respectively compared to 2018 .
year 2018 compared with year 2017 services revenue increased $ 3 .
2 million in 2018 compared to 2017 primarily due to improving demand in the americas and solid growth in emea .
services revenue for the americas and emea segment increased $ 1 .
0 million and $ 6 .
9 million respectively and services revenue for the apac segment decreased $ 4 .
7 million compared to 2017 .
services revenue increased $ 3 .
2 million in 2018 compared to 2017 primarily due to improving demand in the americas and solid growth in emea .
services revenue for the americas and emea segment increased $ 1 .
0 million and $ 6 .
9 million respectively and services revenue for the apac segment decreased $ 4 .
7 million compared to 2017 .
hardware hardware sales net decreased $ 1 .
5 million or -10 % in 2019 compared to 2018 .
we adopted the new asc 606 standard as of january 1 2018 and elected to use the modified retrospective method .
historical hardware sales prior to the adoption of asc 606 were recorded on a gross basis as we were the principal in the transaction in accordance with the previous standard asc 605-45 .
under the new standard we are an agent in the transaction as we do not physically control the hardware which we sell .
accordingly starting january 1 2018 we recognize our hardware revenue net of related cost which reduces both hardware revenue and cost of sales as compared to our accounting prior to 2018 .
for comparison purposes only had we implemented asc 606 using the full retrospective method we would have also presented hardware revenue net of cost for prior periods as shown below .

Question: What is the difference in services revenue from 2018 to 2019?
Answer: $30.8 million